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Food Industry wants you to be active, so it can sell more
http://blogs.plos.org/speakingofmedicine/2012/07/05/is-obesity-simply-about-a-lack-of-balance-why-big-food-wants-you-to-be-fit/ "So is obesity about burnt calorie insufficiencies? Doubly labeled water studies suggest that we’re burning as many today as we did back in the early 1980s (Westerterp, 2008); objective UK…
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Nutritionally balanced pizza shock
http://www.bbc.co.uk/news/uk-scotland-18663969 "The pizzas are said to contain 30% of an adult's guideline daily amount of vitamins and minerals. They are also said to have a third of the recommended amount of calories, protein and carbohydrate."
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Exercise slows down metabolism ?
Controversial, but worth a read - http://www.drbriffa.com/2012/06/15/exercise-boosts-the-metabolism-it-seems-the-reverse-might-be-true/ I often see postings along the lines "I'm eating {sensible number of calories} and exercising five times a week but haven't lost a pound since Easter / Xmas / other milestone". Big…
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Weight loss simulator
http://www.pbrc.edu/the-research/tools/weight-loss-predictor/ is somewhat simpler / less sophisticated than Hall's model. It shows how a 500 calorie initial deficit, the one that is supposed to be 1 lb/week of weight loss, gives a loss of 2.9 lbs in the first month, 2.4 in the second, 2 in the third etc etc. Explains its…
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Cardio & fat loss
Is it better to do 300 calories of easier cardio with a 60% fat burn based on heart rate (180 cals or 20g of fat), or to do 500 calories of harder cardio with 30% fat burn (150 cals of fat) ? The non-fat burn is presumably carbs and glycogen which are then replenished fairly quickly, but does the greater overall burn…
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Protein gives better fat loss results than Carbs
"Participants (age = 45.4 ± 1.2 y; BMI = 32.6 ± 0.8 kg/m2; n = 130) were randomized to 2 energy-restricted diets (−500 kcal/d or −2093 kJ/d): PRO with 1.6 g·kg−1·d−1 protein and <170 g/d carbohydrates or CHO with 0.8 g·kg−1·d−1 protein, >220 g/d carbohydrates. " - PRO was 30 / 40 / 30 and CHO 15 / 55 / 30 as protein /…
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Heart Rate Monitor - calorie count
I sat here on the PC for 15 mins and told the Polar F6 I was "exercising". My heart rate averaged 41% of max with a peak of 45% of max. It says I used 23 calories. So that's 92 calories an hour, or 2208 per day, sat using a PC. My BMR guesstimates are around 1620 so a ratio to BMR of 2208 / 1620 = 1.36 (less if sleep is…
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Leptin radio item
BBC Radio broadcast about leptin - the "obesity hormone" http://downloads.bbc.co.uk/podcasts/worldservice/discovery/discovery_20111205-2000a.mp3 should work anywhere as a download, http://www.bbc.co.uk/programmes/p00lw94w has streaming. A longer version at http://www.bbc.co.uk/programmes/b0174hvg might only stream from UK…
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Case study with Body Weight Simulator
Having a play, lazy Sunday morning. http://bwsimulator.niddk.nih.gov/ Take a 200 lb 40 yr old female 5'-4" tall. RMR estimated as 1564, TDEE with lightly active settings 2503 cals/day = baseline diet. Compare two changes on day 5 - 1. Food intake reduced by 1000 cals/day to 1503. 2. Food intake Increased 50 cals/day to…
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UK TV C4 tonight 8pm
http://www.channel4.com/programmes/secret-eaters using surveillance to understand people that allegedly can't lose weight
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Diabetics do better on higher fat / lower carb
http://in.lifestyle.yahoo.com/high-fat-diet-cut-blood-sugar-levels-improved-095938399.html "In the low-carbohydrate diet, 50 percent of the energy came from fat, 20 percent from carbohydrates, and 30 percent from protein. For the low-fat group the distribution was 30 percent from fat, 55-60 percent from carbohydrates, and…
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Daily Mail - Low fat food is bad for you
http://www.dailymail.co.uk/health/article-2144443/Why-mid-life-health-kicks-WRECK-mens-bodies-Jogging-low-fat-food-make-fatter-damage-heart.html
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Type 2 obese diabetics do better on high fat
http://medicalxpress.com/news/2012-05-high-fat-diet-lowered-blood-sugar.html Scandinavian research showed a group of high fat / lower carb dieters achieved better results in terms of blood sugar and heart risk indicators than the comparison group of high carb / low fat dieters.…
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Defect of "3500 cals per pound"
http://www.ncbi.nlm.nih.gov/pubmed/21872751 Rather than a fixed rate of loss based on a calorie deficit, the authors use a mathematical modelling approach of the dynamic situation and conclude that a better approach than 3500 is a reduction of 10 kcal per day per pound of weight change with half of the weight change being…
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Macro effect in Body Weight Simulator
Having a play with http://bwsimulator.niddk.nih.gov/ i noticed a "carbs" entry box. I set it up to eat maintenance calories for 90 days with 50% from carbs, then dropped to 10% carbs for 90 days, then back to 50%. The effect was a weight loss of 4.2 lbs - 4.5 of fat free mass (mainly water ??) offset by a 0.3 lb fat gain.…
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Want to lose weight ? Sleep may be important
http://www.drbriffa.com/2012/05/02/getting-more-sleep-could-make-it-easier-to-control-our-weight/ Enjoy.
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TEDx talk on nutrition and diet
www.youtube.com/watch?v=KLjgBLwH3Wc by a lady with a vested interest in making herself healthy.
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50% Calorie reduction study - overweight men
http://www.ajcn.org/content/53/2/430.full.pdf Too few subjects for much statistical significance. 28 days at half their baseline energy intake. 4 men on "Low fat" diet (14% protein, 20% fat calories) and 4 on "high fat" (14% protein, 40% fat). Both are high carbohydrate diets. Lost 4kg of fat and 1 kg of fat free mass…
