Aspartame and Cognitive Function?
Replies
-
The fact that there is a "does" and there is a "does not" should be enough.
If you've ever read a scientific study, you will never see these conclusions.
You will see a "may" or "no indication that...".
Very true, and for that very reason, I should be more careful with my wording. Good call.0 -
I'd be interested to see the one demonstrating the link between aspartame and serotonin. The hypothalamus/pituitary/thyroid control the production and regulation of hormones, right? So assuming that aspartame probably can't get into the brain, does that mean it messes up the thyroid?0
-
I'd be interested to see the one demonstrating the link between aspartame and serotonin. The hypothalamus/pituitary/thyroid control the production and regulation of hormones, right? So assuming that aspartame probably can't get into the brain, does that mean it messes up the thyroid?
Yes, hypothetically, if aspartame was acting directly on the hypothalamus/pituitary, then it would be crossing the blood-brain barrier.
However, there is a lot of cross-talk in the endocrine system, so (again hypothetically) aspartame could be acting somewhere in the periphery to stimulate the release of some other hormone which could cross the blood brain barrier and stimulate the hypothalamus and/or pituitary.
Alternatively, as you pointed out, it could act directly on the thyroid.
But I don't believe it does any of that. I've never seen any evidence to indicate that it does. I have not done an exhaustive search.
I did just take a second to go to Pubmed and search "aspartame + endocrine". I found the following (which isn't much):
http://www.ncbi.nlm.nih.gov/pubmed/7441091
J Environ Pathol Toxicol. 1980 Jun-Jul;3(5-6):363-73.
The biological properties of aspartame. III. Examination for endocrine-like activities.
Saunders FJ, Pautsch WF, Nutting EF.
Abstract
A series of studies with aspartame were run in mice, rats and rabbits using standard procedures to characterize possible estrogenic, androgenic, progestational and glucocorticoid activities. Aspartame was administered orally at levels (ca 300 mg/kg/day) substantially in excess of expected maximal human intake when used as a sweetening agent. No significant hormone-mimetic response was observed in the endocrine target organs evaluated. In similar studies, when administered simultaneously with the steroid hormones, it did not reduce the response expected with the steroid. Thus, it was concluded that ingestion of aspartame should not produce any estrogenic, androgenic, progestational or glucocorticoid-like effects. Further, it should not alter the actions of the endogeneous steroid hormones.
Cell Signal. 1998 Nov;10(10):727-33.
Effects of artificial sweeteners on insulin release and cationic fluxes in rat pancreatic islets.
Malaisse WJ, Vanonderbergen A, Louchami K, Jijakli H, Malaisse-Lagae F.
Source
Laboratory of Experimental Medicine, Brussels Free University, Belgium.
Abstract
Beta-L-glucose pentaacetate, but not alpha-D-galactose pentaacetate, was recently reported to taste bitter and to stimulate insulin release. This finding led, in the present study, to the investigation of the effects of both bitter and non-bitter artificial sweeteners on insulin release and cationic fluxes in isolated rat pancreatic islets. Sodium saccharin (1.0-10.0 mM), sodium cyclamate (5.0-10.0 mM), stevioside (1.0 mM) and acesulfame-K (1.0-15.0 mM), all of which display a bitter taste, augmented insulin release from islets incubated in the presence of 7.0 mM D-glucose. In contrast, aspartame (1.0-10.0 mM), which is devoid of bitter taste, failed to affect insulin secretion. A positive secretory response to acesulfame-K was still observed when the extracellular K+ concentration was adjusted to the same value as that in control media. No major changes in 86Rb and 45Ca outflow from pre-labelled perifused islets could be attributed to the saccharin, cyclamic or acesulfame anions. It is proposed that the insulinotropic action of some artificial sweeteners and, possibly, that of selected hexose pentaacetate esters may require G-protein-coupled receptors similar to those operative in the recognition of bitter compounds by taste buds.
"Aspartame + thyroid" produced nothing useful (3 articles, but none of them were about aspartame acting on the thyroid).
"Aspartame + hypothalmus" produced 11 articles... some did seem to suggest a effect of aspartame on rat brain, but as I've already discussed elsewhere, the rat blood-brain barrier seems to be less selective than the human blood-brain barrier when we're talking amino acids. Example: glutamate will cross the blood brain barrier in rats, but probably doesn't in humans.
There was also this little gem, which I liked (but it's not necessarily talking about a direct affect of aspartame on the brain):
Am J Clin Nutr. 2005 Nov;82(5):1011-6.
Functional magnetic resonance imaging of human hypothalamic responses to sweet taste and calories.
Smeets PA, de Graaf C, Stafleu A, van Osch MJ, van der Grond J.
Source
Image Sciences Institute, University Medical Center Utrecht, Utrecht, The Netherlands. paul@isi.uu.nl
Abstract
BACKGROUND:
Evidence exists that beverages do not trigger appropriate anticipatory physiologic responses, such as cephalic phase insulin release. Therefore, it is of interest to elucidate the food properties necessary for triggering adaptive responses. Previously, we found a prolonged dose-dependent decrease in the hypothalamic functional magnetic resonance imaging signal after ingestion of a glucose solution.
OBJECTIVES:
The aims of the present study were to measure the effects of sweet taste and energy content on the hypothalamic response to glucose ingestion and to measure the concomitant changes in blood glucose and insulin concentrations.
DESIGN:
Five healthy, normal-weight men participated in a randomized crossover design trial. The subjects were scanned 4 times for 37 min on separate days with functional magnetic resonance imaging. After 7 min, they ingested 1 of the following 4 stimuli (300 mL of each): water (control), a glucose solution, an aspartame (sweet taste) solution, or a maltodextrin (nonsweet carbohydrate) solution.
RESULTS:
Glucose ingestion resulted in a prolonged and significant signal decrease in the upper hypothalamus (P < 0.05). Water, aspartame, and maltodextrin had no such effect. Glucose and maltodextrin ingestions resulted in similar increases in blood glucose and insulin concentrations. However, only glucose triggered an early rise in insulin concentrations. Aspartame did not trigger any insulin response.
CONCLUSIONS:
Our findings suggest that both sweet taste and energy content are required for a hypothalamic response. The combination of sweet taste and energy content could be crucial in triggering adaptive responses to sweetened beverages.
Anyway, you should really play around on PubMed. It's fun.0 -
OK Mercola claims a 15% drop in intelligence was found in the children of women who consumed aspartame. I can't find the study. Any leads?
Also, I would be interested in seeing evidence that Mercola is a quack. He is someone many people I know take advice from, so I'd be interested to know if they're followin' the wrong guru.
I am, at heart, a skeptic, so I prefer reading the actual studies for myself.
Thank you everyone for all the awesome input/evidence. I couldn't figure out this health thing alone :-)
http://www.chicagotribune.com/health/ct-met-fda-warns-mercola-20110425,0,7369962.story
http://www.casewatch.org/fdawarning/prod/2006/mercola2.shtml
The FDA is scared of Dr Mercola and other Dr's exposing the truth about things, such as artificial sweeteners, GMO's and many other things.0 -
Thank you for posting those!0 -
Aspartame contains three very insidious components: methanol, phenylalanine, and aspartic acid. All three of these chemicals have each been shown to either stimulate brain cells to death, severely disrupt hormone balances in the brain or act as a dangerous nerve poison.
The following are a handful of quotes from an article entitled Aspartame: What You Don't Know Can Hurt You. We would definitely recommend that you read that whole article when you get a chance. Here are the quotes about how incredibly bad aspartame is for you.....
Aspartame accounts for over 75 percent of the adverse reactions to food additives reported to the FDA. Many of these reactions are very serious including seizures and death.
A few of the 90 different documented symptoms listed in the report as being caused by aspartame include: Headaches/migraines, dizziness, seizures, nausea, numbness, muscle spasms, weight gain, rashes, depression, fatigue, irritability, tachycardia, insomnia, vision problems, hearing loss, heart palpitations, breathing difficulties, anxiety attacks, slurred speech, loss of taste, tinnitus, vertigo, memory loss, and joint pain.
According to researchers and physicians studying the adverse effects of aspartame, the following chronic illnesses can be triggered or worsened by ingesting of aspartame: Brain tumors, multiple sclerosis, epilepsy, chronic fatigue syndrome, parkinson's disease, alzheimer's, mental retardation, lymphoma, birth defects, fibromyalgia, and diabetes.
As you can see, aspartame is no laughing matter.
And did you know that aspartame is 10 percent methanol?
Methanol (also known as wood alcohol) is a very deadly poison.
In fact, methanol poisoning has caused many alcoholics to end up blind or dead.
And did you know that once methanol breaks down inside the body one of the byproducts is formaldehyde?
Here is another quote from the article cited above.....
Methanol breaks down into formic acid and formaldehyde in the body. Formaldehyde is a deadly neurotoxin. An EPA assessment of methanol states that methanol "is considered a cumulative poison due to the low rate of excretion once it is absorbed. In the body, methanol is oxidized to formaldehyde and formic acid; both of these metabolites are toxic." They recommend a limit of consumption of 7.8 mg/day. A one-liter (approx. 1 quart) aspartame-sweetened beverage contains about 56 mg of methanol. Heavy users of aspartame-containing products consume as much as 250 mg of methanol daily or 32 times the EPA limit.
Yuck!
Taken From: http://organichealthadviser.com/archives/aspartame-dangers0 -
I stay away from it simply because it tastes awful.
I'd rather drink seltzer water than diet soda.
I agree, it taste horrible.0 -
I also read an article several years back about aspartame and the effects it can enhance cognitively, in the brain of a person with Multiple Sclerosis. I refuse to have anything with aspartame in it! I want to stay at the level of MS that I'm at, and hang on to the cognitive abilities I have0
-
Aspartame contains three very insidious components: methanol, phenylalanine, and aspartic acid.
Oh good gravy. Phenylalanine and aspartic acid are amino acids found in every protein you eat. Your body is perfectly equipped to handle phenylalanine and aspartic acid. In fact, you actually use phenylalanine and aspartic acid as building blocks for muscles, enzymes, etc... Yes... that's right... you have phenylalanine and aspartic acid in every cell of your body right now. Any basic biology class should have taught you that.
Methanol? Also not a problem in small concentrations.0 -
I don't believe there's any conclusive research indicating that aspartame's the devil...
However, if I don't have my morning Diet Coke/Zero, I can't think very straight! LOL!
It's like anything else, especially "fake food" such as this...In moderation!0 -
Aspartame & MS are a bad combo :sick:0
-
There isn't any.
I always read topics when you post in them
0 -
Hello all- I had a girlfriend who had some neurological issues. When she stopped eating it, they stopped too. Sorry to be sketchy because I know there are some nay-sayers, but that was her experience. I have bad headaches from it. I also have bad headaches from Affrin but sometimes my allergies are so bad, it just has to be done.
The UK is doing another study due out in Sept 2012: http://www.foodsafetynews.com/2011/11/europe-re-evaluates-aspartame-safety/0 -
Well then breast feeding babies should definitely stop drinking breast milk because it contains phenylalanine.Aspartame contains three very insidious components: methanol, phenylalanine, and aspartic acid. All three of these chemicals have each been shown to either stimulate brain cells to death, severely disrupt hormone balances in the brain or act as a dangerous nerve poison.
A.C.E. Certified Personal Trainer
IDEA Fitness member
Kickboxing Certified Instructor
Been in fitness for 28+ years and have studied kinesiology and nutrition0 -
Far more (real) evidence about the negative effects of a high sugar diet isn't there? I can't be expected to give up everything...0
-
When you do a search there is a number of studies that have been funded by organisations like The Aspartame Research which are funded by Aspartame producers. They have produced many studies backing their claims that this additive is safe. You have to make up your own mind as to how independent those studies are.
Here are some studies to start you off. As they are published studies you can only view the abstract unless you pay for the paper. However the abstract will give you an overview of the final conclusion of the studies.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1964906/
Life-Span Exposure to Low Doses of Aspartame Beginning during Prenatal Life Increases Cancer Effects in Rats
http://www.ajcn.org/content/40/1/1.short
Effects of aspartame and glucose administration on brain and plasma levels of large neutral amino acids and brain 5-hydroxyindoles
http://www.neurology.org/content/44/10/1787.short
Aspartame ingestion and headaches
http://cat.inist.fr/?aModele=afficheN&cpsidt=2554049
The effect of sucrose- and aspartame-sweetened drinks on energy intake, hunger and food choice of female, moderately restrained eaters
http://www.nejm.org/doi/full/10.1056/NEJM198308183090710
Neurochemical Changes Following High-Dose Aspartame with Dietary Carbohydrates
My take on this is there are peer reviewed studies out there on the effect of Aspartame with conclusions expressing concern as to the use of this for human consumption. I personally don't drink sodas with aspartame because why would I take the risk? Its not essential to my happiness, you don't get a ticket to heaven with every can. Its easily replaced with a great many other enjoyable drinks. Whats so precious about it that you may feel compelled to take the gamble?
Edited to add this one.
http://www.sciencedirect.com/science/article/pii/00063223939025180 -
I have heard over and over and over again that aspartame is the devil. But I haven't seen a lot of research to back this up.
There isn't any.
Your right.
There is no scientific study indicating demonic roots to aspartame. (At least that I could find)
However there certainly has been studies which have concluded there should be concern over consumption of aspartame.0 -
thanks for info
0 -
Topics like this are always amusing - a lot of guesses from people who think its bad and lots of proof that its safe from people who've properly looked into it.
The most amusing thing is often the hates of the said compound will still actively drink and smoke... crazy.0 -
Aspartame is, by Far, the Most Dangerous Substance on the Market that is Added To Foods
November 06 2011 |189,951views| + Add to Favorites
Aspartame is the technical name for the brand names NutraSweet, Equal, Spoonful, and Equal-Measure. It was discovered by accident in 1965 when James Schlatter, a chemist of G.D. Searle Company, was testing an anti-ulcer drug.
Aspartame was approved for dry goods in 1981 and for carbonated beverages in 1983. It was originally approved for dry goods on July 26, 1974, but objections filed by neuroscience researcher Dr John W. Olney and Consumer attorney James Turner in August 1974 as well as investigations of G.D. Searle's research practices caused the U.S. Food and Drug Administration (FDA) to put approval of aspartame on hold (December 5, 1974). In 1985, Monsanto purchased G.D. Searle and made Searle Pharmaceuticals and The NutraSweet Company separate subsidiaries.
Aspartame accounts for over 75 percent of the adverse reactions to food additives reported to the FDA. Many of these reactions are very serious including seizures and death. A few of the 90 different documented symptoms listed in the report as being caused by aspartame include: Headaches/migraines, dizziness, seizures, nausea, numbness, muscle spasms, weight gain, rashes, depression, fatigue, irritability, tachycardia, insomnia, vision problems, hearing loss, heart palpitations, breathing difficulties, anxiety attacks, slurred speech, loss of taste, tinnitus, vertigo, memory loss, and joint pain.
According to researchers and physicians studying the adverse effects of aspartame, the following chronic illnesses can be triggered or worsened by ingesting of aspartame: Brain tumors, multiple sclerosis, epilepsy, chronic fatigue syndrome, parkinson's disease, alzheimer's, mental retardation, lymphoma, birth defects, fibromyalgia, and diabetes.
Aspartame is made up of three chemicals: aspartic acid, phenylalanine, and methanol. The book "Prescription for Nutritional Healing," by James and Phyllis Balch, lists aspartame under the category of "chemical poison." As you shall see, that is exactly what it is.
What Is Aspartame Made Of?
Aspartic Acid (40 percent of Aspartame)
Dr. Russell L. Blaylock, a professor of neurosurgery at the Medical University of Mississippi, recently published a book thoroughly detailing the damage that is caused by the ingestion of excessive aspartic acid from aspartame. Blaylock makes use of almost 500 scientific references to show how excess free excitatory amino acids such as aspartic acid and glutamic acid (about 99 percent of monosodium glutamate (MSG) is glutamic acid) in our food supply are causing serious chronic neurological disorders and a myriad of other acute symptoms.
How Aspartate (and Glutamate) Cause Damage
Aspartate and glutamate act as neurotransmitters in the brain by facilitating the transmission of information from neuron to neuron. Too much aspartate or glutamate in the brain kills certain neurons by allowing the influx of too much calcium into the cells. This influx triggers excessive amounts of free radicals, which kill the cells. The neural cell damage that can be caused by excessive aspartate and glutamate is why they are referred to as "excitotoxins." They "excite" or stimulate the neural cells to death.
Aspartic acid is an amino acid. Taken in its free form (unbound to proteins) it significantly raises the blood plasma level of aspartate and glutamate. The excess aspartate and glutamate in the blood plasma shortly after ingesting aspartame or products with free glutamic acid (glutamate precursor) leads to a high level of those neurotransmitters in certain areas of the brain.
The blood brain barrier (BBB), which normally protects the brain from excess glutamate and aspartate as well as toxins, 1) is not fully developed during childhood, 2) does not fully protect all areas of the brain, 3) is damaged by numerous chronic and acute conditions, and 4) allows seepage of excess glutamate and aspartate into the brain even when intact.
The excess glutamate and aspartate slowly begin to destroy neurons. The large majority (75 percent or more) of neural cells in a particular area of the brain are killed before any clinical symptoms of a chronic illness are noticed. A few of the many chronic illnesses that have been shown to be contributed to by long-term exposure to excitatory amino acid damage include:
•Multiple sclerosis (MS)
•ALS
•Memory loss
•Hormonal problems
•Hearing loss
•Epilepsy
•Alzheimer's disease
•Parkinson's disease
•Hypoglycemia
•AIDS
•Dementia
•Brain lesions
•Neuroendocrine disorders
The risk to infants, children, pregnant women, the elderly and persons with certain chronic health problems from excitotoxins are great. Even the Federation of American Societies for Experimental Biology (FASEB), which usually understates problems and mimics the FDA party-line, recently stated in a review that:
"It is prudent to avoid the use of dietary supplements of L-glutamic acid by pregnant women, infants, and children. The existence of evidence of potential endocrine responses, i.e., elevated cortisol and prolactin, and differential responses between males and females, would also suggest a neuroendocrine link and that supplemental L-glutamic acid should be avoided by women of childbearing age and individuals with affective disorders."
Aspartic acid from aspartame has the same deleterious effects on the body as glutamic acid.
The exact mechanism of acute reactions to excess free glutamate and aspartate is currently being debated. As reported to the FDA, those reactions include:
◦Headaches/migraines
◦Nausea
◦Abdominal pains
◦Fatigue (blocks sufficient glucose entry into brain)
◦Sleep problems
◦Vision problems
◦Anxiety attacks
◦Depression
◦Asthma/chest tigShtness.
One common complaint of persons suffering from the effect of aspartame is memory loss. Ironically, in 1987, G.D. Searle, the manufacturer of aspartame, undertook a search for a drug to combat memory loss caused by excitatory amino acid damage. Blaylock is one of many scientists and physicians who are concerned about excitatory amino acid damage caused by ingestion of aspartame and MSG.
A few of the many experts who have spoken out against the damage being caused by aspartate and glutamate include Adrienne Samuels, Ph.D., an experimental psychologist specializing in research design. Another is Olney, a professor in the department of psychiatry, School of Medicine, Washington University, a neuroscientist and researcher, and one of the world's foremost authorities on excitotoxins. (He informed Searle in 1971 that aspartic acid caused holes in the brains of mice.)
Phenylalanine (50 percent of aspartame)
Phenylalanine is an amino acid normally found in the brain. Persons with the genetic disorder phenylketonuria (PKU) cannot metabolize phenylalanine. This leads to dangerously high levels of phenylalanine in the brain (sometimes lethal). It has been shown that ingesting aspartame, especially along with carbohydrates, can lead to excess levels of phenylalanine in the brain even in persons who do not have PKU.
This is not just a theory, as many people who have eaten large amounts of aspartame over a long period of time and do not have PKU have been shown to have excessive levels of phenylalanine in the blood. Excessive levels of phenylalanine in the brain can cause the levels of seratonin in the brain to decrease, leading to emotional disorders such as depression. It was shown in human testing that phenylalanine levels of the blood were increased significantly in human subjects who chronically used aspartame.
Even a single use of aspartame raised the blood phenylalanine levels. In his testimony before the U.S. Congress, Dr. Louis J. Elsas showed that high blood phenylalanine can be concentrated in parts of the brain and is especially dangerous for infants and fetuses. He also showed that phenylalanine is metabolised much more effeciently by rodents than by humans.
One account of a case of extremely high phenylalanine levels caused by aspartame was recently published the "Wednesday Journal" in an article titled "An Aspartame Nightmare." John Cook began drinking six to eight diet drinks every day. His symptoms started out as memory loss and frequent headaches. He began to crave more aspartame-sweetened drinks. His condition deteriorated so much that he experienced wide mood swings and violent rages. Even though he did not suffer from PKU, a blood test revealed a phenylalanine level of 80 mg/dl. He also showed abnormal brain function and brain damage. After he kicked his aspartame habit, his symptoms improved dramatically.
As Blaylock points out in his book, early studies measuring phenylalanine buildup in the brain were flawed. Investigators who measured specific brain regions and not the average throughout the brain notice significant rises in phenylalanine levels. Specifically the hypothalamus, medulla oblongata, and corpus striatum areas of the brain had the largest increases in phenylalanine. Blaylock goes on to point out that excessive buildup of phenylalanine in the brain can cause schizophrenia or make one more susceptible to seizures.
Therefore, long-term, excessive use of aspartame may provid a boost to sales of seratonin reuptake inhibitors such as Prozac and drugs to control schizophrenia and seizures.
Methanol (aka wood alcohol/poison) (10 percent of aspartame)
Methanol/wood alcohol is a deadly poison. Some people may remember methanol as the poison that has caused some "skid row" alcoholics to end up blind or dead. Methanol is gradually released in the small intestine when the methyl group of aspartame encounter the enzyme chymotrypsin.
The absorption of methanol into the body is sped up considerably when free methanol is ingested. Free methanol is created from aspartame when it is heated to above 86 Fahrenheit (30 Centigrade). This would occur when aspartame-containing product is improperly stored or when it is heated (e.g., as part of a "food" product such as Jello).
Methanol breaks down into formic acid and formaldehyde in the body. Formaldehyde is a deadly neurotoxin. An EPA assessment of methanol states that methanol "is considered a cumulative poison due to the low rate of excretion once it is absorbed. In the body, methanol is oxidized to formaldehyde and formic acid; both of these metabolites are toxic." They recommend a limit of consumption of 7.8 mg/day. A one-liter (approx. 1 quart) aspartame-sweetened beverage contains about 56 mg of methanol. Heavy users of aspartame-containing products consume as much as 250 mg of methanol daily or 32 times the EPA limit.
Symptoms from methanol poisoning include headaches, ear buzzing, dizziness, nausea, gastrointestinal disturbances, weakness, vertigo, chills, memory lapses, numbness and shooting pains in the extremities, behavioral disturbances, and neuritis. The most well known problems from methanol poisoning are vision problems including misty vision, progressive contraction of visual fields, blurring of vision, obscuration of vision, retinal damage, and blindness. Formaldehyde is a known carcinogen, causes retinal damage, interferes with DNA replication and causes birth defects.
Due to the lack of a couple of key enzymes, humans are many times more sensitive to the toxic effects of methanol than animals. Therefore, tests of aspartame or methanol on animals do not accurately reflect the danger for humans. As pointed out by Dr. Woodrow C. Monte, director of the food science and nutrition laboratory at Arizona State University, "There are no human or mammalian studies to evaluate the possible mutagenic, teratogenic or carcinogenic effects of chronic administration of methyl alcohol."
He was so concerned about the unresolved safety issues that he filed suit with the FDA requesting a hearing to address these issues. He asked the FDA to "slow down on this soft drink issue long enough to answer some of the important questions. It's not fair that you are leaving the full burden of proof on the few of us who are concerned and have such limited resources. You must remember that you are the American public's last defense. Once you allow usage (of aspartame) there is literally nothing I or my colleagues can do to reverse the course. Aspartame will then join saccharin, the sulfiting agents, and God knows how many other questionable compounds enjoined to insult the human constitution with governmental approval." Shortly thereafter, the Commissioner of the FDA, Arthur Hull Hayes, Jr., approved the use of aspartame in carbonated beverages, he then left for a position with G.D. Searle's public relations firm.
It has been pointed out that some fruit juices and alcoholic beverages contain small amounts of methanol. It is important to remember, however, that methanol never appears alone. In every case, ethanol is present, usually in much higher amounts. Ethanol is an antidote for methanol toxicity in humans. The troops of Desert Storm were "treated" to large amounts of aspartame-sweetened beverages, which had been heated to over 86 degrees F in the Saudi Arabian sun. Many of them returned home with numerous disorders similar to what has been seen in persons who have been chemically poisoned by formaldehyde. The free methanol in the beverages may have been a contributing factor in these illnesses. Other breakdown products of aspartame such as DKP (discussed below) may also have been a factor.
In a 1993 act that can only be described as "unconscionable," the FDA approved aspartame as an ingredient in numerous food items that would always be heated to above 86 degree F (30 degree C).
Diketopiperazine (DKP)
DKP is a byproduct of aspartame metabolism. DKP has been implicated in the occurrence of brain tumors. Olney noticed that DKP, when nitrosated in the gut, produced a compound that was similar to N-nitrosourea, a powerful brain tumor causing chemical. Some authors have said that DKP is produced after aspartame ingestion. I am not sure if that is correct. It is definitely true that DKP is formed in liquid aspartame-containing products during prolonged storage.
G.D. Searle conducted animal experiments on the safety of DKP. The FDA found numerous experimental errors occurred, including "clerical errors, mixed-up animals, animals not getting drugs they were supposed to get, pathological specimens lost because of improper handling," and many other errors. These sloppy laboratory procedures may explain why both the test and control animals had sixteen times more brain tumors than would be expected in experiments of this length.
In an ironic twist, shortly after these experimental errors were discovered, the FDA used guidelines recommended by G.D. Searle to develop the industry-wide FDA standards for good laboratory practices.
DKP has also been implicated as a cause of uterine polyps and changes in blood cholesterol by FDA Toxicologist Dr. Jacqueline Verrett in her testimony before the U.S. Senate.0 -
Congratulations, you know how to plagiarize from the quack Mercola.0
-
I think in moderation it wouldnt do too much harm anyways
atleast thats what i tell myself. id drink diet pepsi like water if i could. 0 -
Congratulations, you know how to plagiarize from the quack Mercola.
Google-fu at its worse.0 -
I have heard over and over and over again that aspartame is the devil. But I haven't seen a lot of research to back this up.
There isn't any.
This0 -
And so are fruits and vegetables if you didn't know.http://www.ncbi.nlm.nih.gov/pubmed/18627677
Dermatitis. 2008 May-Jun;19(3):E10-1.
Formaldehyde, aspartame, and migraines: a possible connection.
Jacob SE, Stechschulte S.
Source
Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL, USA.
Abstract
Aspartame is a widely used artificial sweetener that has been linked to pediatric and adolescent migraines. Upon ingestion, aspartame is broken, converted, and oxidized into formaldehyde in various tissues. We present the first case series of aspartame-associated migraines related to clinically relevant positive reactions to formaldehyde on patch testing.
Comment in
Dermatitis. 2009 May-Jun;20(3):176-7; author reply 177-9.
http://www.ncbi.nlm.nih.gov/pubmed/21822758
Neurotox Res. 2011 Aug 6. [Epub ahead of print]
Effect of Aspartame on Oxidative Stress and Monoamine Neurotransmitter Levels in Lipopolysaccharide-Treated Mice.
Abdel-Salam OM, Salem NA, Hussein JS.
Source
Department of Toxicology and Narcotics, National Research Centre, Tahrir St., Dokki, Cairo, Egypt, omasalam@hotmail.com.
Abstract
This study aimed at investigating the effect of the sweetener aspartame on oxidative stress and brain monoamines in normal circumstances and after intraperitoneal (i.p.) administration of lipopolysaccharide (LPS; 100 μg/kg) in mice. Aspartame (0.625-45 mg/kg) was given via subcutaneous route at the time of endotoxin administration. Mice were euthanized 4 h later. Reduced glutathione (GSH), lipid peroxidation (thiobarbituric acid-reactive substances; TBARS), and nitrite concentrations were measured in brain and liver. Tumor necrosis factor-alpha (TNF-α) and glucose were determined in brain. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) were measured in liver. The administration of only aspartame (22.5 and 45 mg/kg) increased brain TBARS by 17.7-32.8%, decreased GSH by 25.6-31.6%, and increased TNF-α by 16.7-44%. Aspartame caused dose-dependent inhibition of brain serotonin, noradrenaline, and dopamine. Aspartame did not alter liver TBARS, nitrite, GSH, AST, ALT, or ALP. The administration of LPS increased nitrite in brain and liver by 26.8 and 37.1%, respectively; decreased GSH in brain and liver by 21.6 and 31.1%, respectively; increased brain TNF-α by 340.4%, and glucose by 39.9%, and caused marked increase in brain monoamines. LPS increased AST, ALT, and ALP in liver tissue by 84.4, 173.7, and 258.9%, respectively. Aspartame given to LPS-treated mice at 11.25 and 22.5 mg/kg increased brain TBARS by 15.5-16.9%, nitrite by 12.6-20.1%, and mitigated the increase in monoamines. Aspartame did not alter liver TBARS, nitrite, GSH, ALT, AST, or ALP. Thus, the administration of aspartame alone or in the presence of mild systemic inflammatory response increases oxidative stress and inflammation in the brain, but not in the liver.
PMID:
21822758
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21376768
Food Chem Toxicol. 2011 Jun;49(6):1203-7. Epub 2011 Mar 3.
Effect of long term intake of aspartame on antioxidant defense status in liver.
Abhilash M, Paul MV, Varghese MV, Nair RH.
Source
School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala 686560, India.
Abstract
The present study evaluates the effect of long term intake of aspartame, the artificial sweetener, on liver antioxidant system and hepatocellular injury in animal model. Eighteen adult male Wistar rats, weighing 150-175 g, were randomly divided into three groups as follows: first group was given aspartame dissolved in water in a dose of 500 mg/kg b.wt.; the second group was given a dose of 1000 mg/kg b.wt.; and controls were given water freely. Rats that had received aspartame (1000 mg/kg b.wt.) in the drinking water for 180 days showed a significant increase in activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and γ-glutamyl transferase (GGT). The concentration of reduced glutathione (GSH) and the activity of glutathione peroxidase (GPx), and glutathione reductase (GR) were significantly reduced in the liver of rats that had received aspartame (1000 mg/kg b.wt.). Glutathione was significantly decreased in both the experimental groups. Histopathological examination revealed leukocyte infiltration in aspartame-treated rats (1000 mg/kg b.wt.). It can be concluded from these observations that long term consumption of aspartame leads to hepatocellular injury and alterations in liver antioxidant status mainly through glutathione dependent system.
Copyright © 2011 Elsevier Ltd. All rights reserved.
aspartame is broken, converted, and oxidized into formaldehyde in various tissues, this alone does not make me want to ingest it. formaldehyde is a very toxic carcinogen. The other studies show brain damage and liver disfunction due to aspartame.
Good thing we aren't rats and mice.
Also a "possible" link from the first study isn't conclusive. Although it was nice to read.
A.C.E. Certified Personal/Group FitnessTrainer
IDEA Fitness member
Kickboxing Certified Instructor
Been in fitness for 28+ years and have studied kinesiology and nutrition0 -
The issue I have with this article is that it's picked and chosen how to word ingredients to sound "bad". Formaldehyde is formed also from ingesting fruits and vegetables.Aspartame is, by Far, the Most Dangerous Substance on the Market that is Added To Foods
November 06 2011 |189,951views| + Add to Favorites
Aspartame is the technical name for the brand names NutraSweet, Equal, Spoonful, and Equal-Measure. It was discovered by accident in 1965 when James Schlatter, a chemist of G.D. Searle Company, was testing an anti-ulcer drug.
Aspartame was approved for dry goods in 1981 and for carbonated beverages in 1983. It was originally approved for dry goods on July 26, 1974, but objections filed by neuroscience researcher Dr John W. Olney and Consumer attorney James Turner in August 1974 as well as investigations of G.D. Searle's research practices caused the U.S. Food and Drug Administration (FDA) to put approval of aspartame on hold (December 5, 1974). In 1985, Monsanto purchased G.D. Searle and made Searle Pharmaceuticals and The NutraSweet Company separate subsidiaries.
Aspartame accounts for over 75 percent of the adverse reactions to food additives reported to the FDA. Many of these reactions are very serious including seizures and death. A few of the 90 different documented symptoms listed in the report as being caused by aspartame include: Headaches/migraines, dizziness, seizures, nausea, numbness, muscle spasms, weight gain, rashes, depression, fatigue, irritability, tachycardia, insomnia, vision problems, hearing loss, heart palpitations, breathing difficulties, anxiety attacks, slurred speech, loss of taste, tinnitus, vertigo, memory loss, and joint pain.
According to researchers and physicians studying the adverse effects of aspartame, the following chronic illnesses can be triggered or worsened by ingesting of aspartame: Brain tumors, multiple sclerosis, epilepsy, chronic fatigue syndrome, parkinson's disease, alzheimer's, mental retardation, lymphoma, birth defects, fibromyalgia, and diabetes.
Aspartame is made up of three chemicals: aspartic acid, phenylalanine, and methanol. The book "Prescription for Nutritional Healing," by James and Phyllis Balch, lists aspartame under the category of "chemical poison." As you shall see, that is exactly what it is.
What Is Aspartame Made Of?
Aspartic Acid (40 percent of Aspartame)
Dr. Russell L. Blaylock, a professor of neurosurgery at the Medical University of Mississippi, recently published a book thoroughly detailing the damage that is caused by the ingestion of excessive aspartic acid from aspartame. Blaylock makes use of almost 500 scientific references to show how excess free excitatory amino acids such as aspartic acid and glutamic acid (about 99 percent of monosodium glutamate (MSG) is glutamic acid) in our food supply are causing serious chronic neurological disorders and a myriad of other acute symptoms.
How Aspartate (and Glutamate) Cause Damage
Aspartate and glutamate act as neurotransmitters in the brain by facilitating the transmission of information from neuron to neuron. Too much aspartate or glutamate in the brain kills certain neurons by allowing the influx of too much calcium into the cells. This influx triggers excessive amounts of free radicals, which kill the cells. The neural cell damage that can be caused by excessive aspartate and glutamate is why they are referred to as "excitotoxins." They "excite" or stimulate the neural cells to death.
Aspartic acid is an amino acid. Taken in its free form (unbound to proteins) it significantly raises the blood plasma level of aspartate and glutamate. The excess aspartate and glutamate in the blood plasma shortly after ingesting aspartame or products with free glutamic acid (glutamate precursor) leads to a high level of those neurotransmitters in certain areas of the brain.
The blood brain barrier (BBB), which normally protects the brain from excess glutamate and aspartate as well as toxins, 1) is not fully developed during childhood, 2) does not fully protect all areas of the brain, 3) is damaged by numerous chronic and acute conditions, and 4) allows seepage of excess glutamate and aspartate into the brain even when intact.
The excess glutamate and aspartate slowly begin to destroy neurons. The large majority (75 percent or more) of neural cells in a particular area of the brain are killed before any clinical symptoms of a chronic illness are noticed. A few of the many chronic illnesses that have been shown to be contributed to by long-term exposure to excitatory amino acid damage include:
•Multiple sclerosis (MS)
•ALS
•Memory loss
•Hormonal problems
•Hearing loss
•Epilepsy
•Alzheimer's disease
•Parkinson's disease
•Hypoglycemia
•AIDS
•Dementia
•Brain lesions
•Neuroendocrine disorders
The risk to infants, children, pregnant women, the elderly and persons with certain chronic health problems from excitotoxins are great. Even the Federation of American Societies for Experimental Biology (FASEB), which usually understates problems and mimics the FDA party-line, recently stated in a review that:
"It is prudent to avoid the use of dietary supplements of L-glutamic acid by pregnant women, infants, and children. The existence of evidence of potential endocrine responses, i.e., elevated cortisol and prolactin, and differential responses between males and females, would also suggest a neuroendocrine link and that supplemental L-glutamic acid should be avoided by women of childbearing age and individuals with affective disorders."
Aspartic acid from aspartame has the same deleterious effects on the body as glutamic acid.
The exact mechanism of acute reactions to excess free glutamate and aspartate is currently being debated. As reported to the FDA, those reactions include:
◦Headaches/migraines
◦Nausea
◦Abdominal pains
◦Fatigue (blocks sufficient glucose entry into brain)
◦Sleep problems
◦Vision problems
◦Anxiety attacks
◦Depression
◦Asthma/chest tigShtness.
One common complaint of persons suffering from the effect of aspartame is memory loss. Ironically, in 1987, G.D. Searle, the manufacturer of aspartame, undertook a search for a drug to combat memory loss caused by excitatory amino acid damage. Blaylock is one of many scientists and physicians who are concerned about excitatory amino acid damage caused by ingestion of aspartame and MSG.
A few of the many experts who have spoken out against the damage being caused by aspartate and glutamate include Adrienne Samuels, Ph.D., an experimental psychologist specializing in research design. Another is Olney, a professor in the department of psychiatry, School of Medicine, Washington University, a neuroscientist and researcher, and one of the world's foremost authorities on excitotoxins. (He informed Searle in 1971 that aspartic acid caused holes in the brains of mice.)
Phenylalanine (50 percent of aspartame)
Phenylalanine is an amino acid normally found in the brain. Persons with the genetic disorder phenylketonuria (PKU) cannot metabolize phenylalanine. This leads to dangerously high levels of phenylalanine in the brain (sometimes lethal). It has been shown that ingesting aspartame, especially along with carbohydrates, can lead to excess levels of phenylalanine in the brain even in persons who do not have PKU.
This is not just a theory, as many people who have eaten large amounts of aspartame over a long period of time and do not have PKU have been shown to have excessive levels of phenylalanine in the blood. Excessive levels of phenylalanine in the brain can cause the levels of seratonin in the brain to decrease, leading to emotional disorders such as depression. It was shown in human testing that phenylalanine levels of the blood were increased significantly in human subjects who chronically used aspartame.
Even a single use of aspartame raised the blood phenylalanine levels. In his testimony before the U.S. Congress, Dr. Louis J. Elsas showed that high blood phenylalanine can be concentrated in parts of the brain and is especially dangerous for infants and fetuses. He also showed that phenylalanine is metabolised much more effeciently by rodents than by humans.
One account of a case of extremely high phenylalanine levels caused by aspartame was recently published the "Wednesday Journal" in an article titled "An Aspartame Nightmare." John Cook began drinking six to eight diet drinks every day. His symptoms started out as memory loss and frequent headaches. He began to crave more aspartame-sweetened drinks. His condition deteriorated so much that he experienced wide mood swings and violent rages. Even though he did not suffer from PKU, a blood test revealed a phenylalanine level of 80 mg/dl. He also showed abnormal brain function and brain damage. After he kicked his aspartame habit, his symptoms improved dramatically.
As Blaylock points out in his book, early studies measuring phenylalanine buildup in the brain were flawed. Investigators who measured specific brain regions and not the average throughout the brain notice significant rises in phenylalanine levels. Specifically the hypothalamus, medulla oblongata, and corpus striatum areas of the brain had the largest increases in phenylalanine. Blaylock goes on to point out that excessive buildup of phenylalanine in the brain can cause schizophrenia or make one more susceptible to seizures.
Therefore, long-term, excessive use of aspartame may provid a boost to sales of seratonin reuptake inhibitors such as Prozac and drugs to control schizophrenia and seizures.
Methanol (aka wood alcohol/poison) (10 percent of aspartame)
Methanol/wood alcohol is a deadly poison. Some people may remember methanol as the poison that has caused some "skid row" alcoholics to end up blind or dead. Methanol is gradually released in the small intestine when the methyl group of aspartame encounter the enzyme chymotrypsin.
The absorption of methanol into the body is sped up considerably when free methanol is ingested. Free methanol is created from aspartame when it is heated to above 86 Fahrenheit (30 Centigrade). This would occur when aspartame-containing product is improperly stored or when it is heated (e.g., as part of a "food" product such as Jello).
Methanol breaks down into formic acid and formaldehyde in the body. Formaldehyde is a deadly neurotoxin. An EPA assessment of methanol states that methanol "is considered a cumulative poison due to the low rate of excretion once it is absorbed. In the body, methanol is oxidized to formaldehyde and formic acid; both of these metabolites are toxic." They recommend a limit of consumption of 7.8 mg/day. A one-liter (approx. 1 quart) aspartame-sweetened beverage contains about 56 mg of methanol. Heavy users of aspartame-containing products consume as much as 250 mg of methanol daily or 32 times the EPA limit.
Symptoms from methanol poisoning include headaches, ear buzzing, dizziness, nausea, gastrointestinal disturbances, weakness, vertigo, chills, memory lapses, numbness and shooting pains in the extremities, behavioral disturbances, and neuritis. The most well known problems from methanol poisoning are vision problems including misty vision, progressive contraction of visual fields, blurring of vision, obscuration of vision, retinal damage, and blindness. Formaldehyde is a known carcinogen, causes retinal damage, interferes with DNA replication and causes birth defects.
Due to the lack of a couple of key enzymes, humans are many times more sensitive to the toxic effects of methanol than animals. Therefore, tests of aspartame or methanol on animals do not accurately reflect the danger for humans. As pointed out by Dr. Woodrow C. Monte, director of the food science and nutrition laboratory at Arizona State University, "There are no human or mammalian studies to evaluate the possible mutagenic, teratogenic or carcinogenic effects of chronic administration of methyl alcohol."
He was so concerned about the unresolved safety issues that he filed suit with the FDA requesting a hearing to address these issues. He asked the FDA to "slow down on this soft drink issue long enough to answer some of the important questions. It's not fair that you are leaving the full burden of proof on the few of us who are concerned and have such limited resources. You must remember that you are the American public's last defense. Once you allow usage (of aspartame) there is literally nothing I or my colleagues can do to reverse the course. Aspartame will then join saccharin, the sulfiting agents, and God knows how many other questionable compounds enjoined to insult the human constitution with governmental approval." Shortly thereafter, the Commissioner of the FDA, Arthur Hull Hayes, Jr., approved the use of aspartame in carbonated beverages, he then left for a position with G.D. Searle's public relations firm.
It has been pointed out that some fruit juices and alcoholic beverages contain small amounts of methanol. It is important to remember, however, that methanol never appears alone. In every case, ethanol is present, usually in much higher amounts. Ethanol is an antidote for methanol toxicity in humans. The troops of Desert Storm were "treated" to large amounts of aspartame-sweetened beverages, which had been heated to over 86 degrees F in the Saudi Arabian sun. Many of them returned home with numerous disorders similar to what has been seen in persons who have been chemically poisoned by formaldehyde. The free methanol in the beverages may have been a contributing factor in these illnesses. Other breakdown products of aspartame such as DKP (discussed below) may also have been a factor.
In a 1993 act that can only be described as "unconscionable," the FDA approved aspartame as an ingredient in numerous food items that would always be heated to above 86 degree F (30 degree C).
Diketopiperazine (DKP)
DKP is a byproduct of aspartame metabolism. DKP has been implicated in the occurrence of brain tumors. Olney noticed that DKP, when nitrosated in the gut, produced a compound that was similar to N-nitrosourea, a powerful brain tumor causing chemical. Some authors have said that DKP is produced after aspartame ingestion. I am not sure if that is correct. It is definitely true that DKP is formed in liquid aspartame-containing products during prolonged storage.
G.D. Searle conducted animal experiments on the safety of DKP. The FDA found numerous experimental errors occurred, including "clerical errors, mixed-up animals, animals not getting drugs they were supposed to get, pathological specimens lost because of improper handling," and many other errors. These sloppy laboratory procedures may explain why both the test and control animals had sixteen times more brain tumors than would be expected in experiments of this length.
In an ironic twist, shortly after these experimental errors were discovered, the FDA used guidelines recommended by G.D. Searle to develop the industry-wide FDA standards for good laboratory practices.
DKP has also been implicated as a cause of uterine polyps and changes in blood cholesterol by FDA Toxicologist Dr. Jacqueline Verrett in her testimony before the U.S. Senate.
Within our bodies formaldehyde is essential in the development of DNA proteins and is a normal component of human blood. Once again however, it does not accumulate and is quickly broken down by metabolic process with formaldehyde in the body having a half life of about one minute.
Because the body is designed for dealing with formaldehyde, it is well equipped to handle additional formaldehyde intake from external sources. Most of it is exhaled from the body in our breath and the rest broken down by normal metabolic processes. Unless taken in abnormally large doses (which diet soda's case would be drinking like 4 cases a day), there really isn't any acute issues unless someone is sensitive to it.
MSG according to this article is causing the Asian population to have neuron issues.:laugh: Asian consume probably more than double the amount of MSG compared to the average American. Sounds more like MSG is helping Asian intellect.
Extracting small opposition studies and picking and choosing how to present them isn't evidence.
A.C.E. Certified Personal/Group FitnessTrainer
IDEA Fitness member
Kickboxing Certified Instructor
Been in fitness for 28+ years and have studied kinesiology and nutrition0 -
Test.0
-
If you don't know by now that the FDA and the medical establishment cannot be trusted, then you haven't done much research. To obtain the truth, always follow the money trail. Now, I agree with two of the commenters. I too developed rashes from asperatame. It took me months to make the connection (asperatame in ice cream bars that were kept in the freezer). Perhaps, I too, have an allergy, but since it is the only food allergy, I repeat, only, food alergy I have, that should be a good hint that asperatame is bad news. Another thing. Its been decades since I have (knowingly) consumed asperatame, but decided to drink coke zero, which contains asperatame, the other day, and it caused cognitive and vision problems, as a couple of the commenters mentioned. I didn't immediately make the connection between the cognitive dysfunction and the asperatame, because I didn't think I would have an adverse reaction at the time. Personally, I read a lot, and the night I drank the coke zero, I had problems reading and concentrating. This rarely happens to me. I just sluffed it off as just one of those days, but a couple days later, I had a eureka moment, because, like I said, I never made an issue of the asperatame since it was just a small beverage that caused my symptoms. So, yes, asperatame causes vision and cognitive problems.0
This discussion has been closed.
Categories
- All Categories
- 1.4M Health, Wellness and Goals
- 393.4K Introduce Yourself
- 43.8K Getting Started
- 260.2K Health and Weight Loss
- 175.9K Food and Nutrition
- 47.4K Recipes
- 232.5K Fitness and Exercise
- 426 Sleep, Mindfulness and Overall Wellness
- 6.5K Goal: Maintaining Weight
- 8.5K Goal: Gaining Weight and Body Building
- 153K Motivation and Support
- 8K Challenges
- 1.3K Debate Club
- 96.3K Chit-Chat
- 2.5K Fun and Games
- 3.7K MyFitnessPal Information
- 24 News and Announcements
- 1.1K Feature Suggestions and Ideas
- 2.6K MyFitnessPal Tech Support Questions