Huge deficit
andysport1
Posts: 592 Member
So, hypothetical.
Imagine someone went on one of these 800 calorie a day diets, they walked there 10,000 steps (500 cal) plus they went jogging or cycling for a further 1300 calories.
That would be a deficit of 3500 calories a day a 1lb in weight.
I wonder what impact this would have on the person.
Consider the 800 calories contain all vitamins and minerals needed.
Has anyone any idea ?
Imagine someone went on one of these 800 calorie a day diets, they walked there 10,000 steps (500 cal) plus they went jogging or cycling for a further 1300 calories.
That would be a deficit of 3500 calories a day a 1lb in weight.
I wonder what impact this would have on the person.
Consider the 800 calories contain all vitamins and minerals needed.
Has anyone any idea ?
17
Replies
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They would probably collapse from exhaustion before it got to that.
The 800 calories might have the vitamins and minerals necessary but it would not have the macro-nutrients required to keep up that level of activity.
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After awhile they would probably start to feel extremely fatigued and have a hard time keeping to the routine. They also might be more irritable than normal and lash out at family/friends/coworkers (hangry). The rapid loss could also cause them to get gallstones. They could also end up losing lots of lean body mass and potentially causing long term damage to the body.9
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I just had a mental picture of that old film 'the incredible shrinking man' ..........eventually he just disappeared into the ether lol3
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shadow2soul wrote: »After awhile they would probably start to feel extremely fatigued and have a hard time keeping to the routine. They also might be more irritable than normal and lash out at family/friends/coworkers (hangry). The rapid loss could also cause them to get gallstones. They could also end up losing lots of lean body mass and potentially causing long term damage to the body.
To add further even in the short term it can impact hormones, which can cause hair loss/brittle nails/sallow skin/interference with menstrual cycles in women.
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andysport1 wrote: »So, hypothetical.
Imagine someone went on one of these 800 calorie a day diets, they walked there 10,000 steps (500 cal) plus they went jogging or cycling for a further 1300 calories.
That would be a deficit of 3500 calories a day a 1lb in weight.
I wonder what impact this would have on the person.
Consider the 800 calories contain all vitamins and minerals needed.
Has anyone any idea ?
My OH tried that once years ago ..... he turned real nasty and I shot him11 -
I will tell a story of a day where I tried something similar. A couple months ago I did my first crossfit competition. It contained 4 intense workouts starting at 9 am and ending around 6 pm. I ate a light breakfast of a banana and a can of pre-workout. I then completed the first 2 events. I attempted eating a meal at lunch, but my nerves did not let me and I only ate a piece of bread (the baguette side from panera bread to be exact). I then performed the 3rd workout. I had a few more light snacks prior to the final workout. Throughout the competition, I probably had maybe 600-800 calories. By the last workout, I felt very fatigued and struggled making it through. I could absolutely feel the lack of properly fueling my workout and it 100% effected my performance during that final workout.
Moral of the story, it won't kill you, but you will feel like crap. And you will likely not have the energy throughout the day to support that.10 -
Gallstones omg
Shooting your husband haha @suziecue25-1 -
What Are the Risks of Rapid Weight Loss?
Rapid weight loss creates physical demands on the body. Possible serious risks include:- Gallstones, which occur in 12% to 25% of people losing large amounts of weight over several months
- Dehydration, which can be avoided by drinking plenty of fluids
- Malnutrition, usually from not eating enough protein for weeks at a time
- Electrolyte imbalances, which rarely can be life threatening
Other side effects of rapid weight loss include:- Headaches
- Irritability
- Fatigue
- Dizziness
- Constipation
- Menstrual irregularities
- Hair loss
- Muscle loss
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I think this should be the label on all 800 calorie diets.2
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So the NHS in England are promoting these 800 calorie diets.6
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andysport1 wrote: »So the NHS in England are promoting these 800 calorie diets.
Is the NHS promoting 800 calorie diets for everyone, or people with specific medical conditions who are under strict medical supervision?
While click-baity headlines may imply the former, the truth is probably the latter.
https://www.england.nhs.uk/2018/11/very-low-calorie-diets-part-of-nhs-action-to-tackle-growing-obesity-and-type-2-diabetes-epidemic/9 -
kshama2001 wrote: »
Is the NHS promoting 800 calorie diets for everyone, or people with specific medical conditions who are under strict medical supervision?
While click-baity headlines may imply the former, the truth is probably the latter.
https://www.england.nhs.uk/2018/11/very-low-calorie-diets-part-of-nhs-action-to-tackle-growing-obesity-and-type-2-diabetes-epidemic/
^ This0 -
kshama2001 wrote: »
Is the NHS promoting 800 calorie diets for everyone, or people with specific medical conditions who are under strict medical supervision?
While click-baity headlines may imply the former, the truth is probably the latter.
https://www.england.nhs.uk/2018/11/very-low-calorie-diets-part-of-nhs-action-to-tackle-growing-obesity-and-type-2-diabetes-epidemic/
I read it was anyone with a BMI over 300 -
andysport1 wrote: »
I read it was anyone with a BMI over 30
See also from the NHS https://www.nhs.uk/live-well/healthy-weight/very-low-calorie-diets/ the media's interpretation of stuff, often isn't quite what is intended to be put across.
Edited for TLDR:
Excerpt
"VLCDs aren't suitable for most people
VLCDs aren't routinely recommended by the NHS unless a patient has a medical need, such as needing to lose weight:
*for surgery
*to help manage a health condition, such as diabetes
*to prepare for fertility treatment"4 -
andysport1 wrote: »So the NHS in England are promoting these 800 calorie diets.
Actually, no, they aren't -- they are using them in very limited situations with severely overweight and obese type 2 diabetics, with intense medical monitoring.3 -
andysport1 wrote: »So the NHS in England are promoting these 800 calorie diets.
I'm not in England, but in previous threads we've had about the NHS policy, my understanding is they aren't "promoting" an 800 cal diet. They published data showing that for some obese people, health improvements were seen when eating an 800 cal diet for a short period of time under a doctor's careful monitoring. In rare occasions, the dangers of staying obese are worse than the dangers of a VLCD, and a doctor might decide it's worth the risk. They are by no means saying anyone should just decide to go that low on their own.8 -
The NHS is promoting a clinically supervised 800 calorie diet as an emergency intervention for Type 2 Diabetes. This is different than what you outlined in your first post.
Medically supervised VLC diets are undertaken as emergency temporary measures only and since they're supervised and monitored by physicians for signs of side effects, they're fine.
Doing it on one's own like following Michael Mosley's book? No.6 -
andysport1 wrote: »So the NHS in England are promoting these 800 calorie diets.
Aren't those also very highly supervised diets though. As in, the patient is working very closely with their doctor(s) and has to meet various qualifications in order to qualify. They aren't suggesting that the whole of the country go on that diet.1 -
andysport1 wrote: »
I read it was anyone with a BMI over 30
Here's some more reading for you - https://www.bbc.com/news/health-463638691 -
I can't even imagine an 800 cal. diet that wasn't an absolute medical necessity.0
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Plenty of examples available - concentration camp diet?0
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I can't even imagine an 800 cal. diet that wasn't an absolute medical necessity.
I was thinking the same thing. With my occasional hangry feelings at my current deficit... and admitedly I can get hangry while on maintenance... I’d turn into a crazy person on 800 a day. That or I’d turn into a wraith. Or an axe murderer.2 -
Haven't read all reply..
Vitimins has very little to no calories at all. body needs fuel from calories.
800 cal? Unless your on the survival show (naked and afraid). You'll look like them in the end.. frail and week.0 -
I was thinking the same thing. With my occasional hangry feelings at my current deficit... and admitedly I can get hangry while on maintenance... I’d turn into a crazy person on 800 a day. That or I’d turn into a wraith. Or an axe murderer.
I do understand the attraction of and desire to have a hypothetical discussion, but I've known people with severe eating disorders (my niece is one) and my immediate reaction is just 100% push back against the idea. Most folks (I would think) want to lose weight to gain health and look good. 800 cals per day accomplishes neither of those goals.
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HA! No kidding right?
I do understand the attraction of and desire to have a hypothetical discussion, but I've known people with severe eating disorders (my niece is one) and my immediate reaction is just 100% push back against the idea. Most folks (I would think) want to lose weight to gain health and look good. 800 cals per day accomplishes neither of those goals.
You are absolutely right. A woman I went to college with was hospitalized because of her eating disorder. Twenty years later she is still super lean, but strong - I see her occasionally at the gym, which is why I know.
People get impatient because they want to lose weight, but there are so many health-related reasons for moderation. Sometimes I feel I am borderline obsessed with tracking my weight and calories these days, but I’ve also yoyo-ed for most of my adult life and want to learn the maintenance thing. It’s all about moderation -800 calories is extreme2 -
HA! No kidding right?
I do understand the attraction of and desire to have a hypothetical discussion, but I've known people with severe eating disorders (my niece is one) and my immediate reaction is just 100% push back against the idea. Most folks (I would think) want to lose weight to gain health and look good. 800 cals per day accomplishes neither of those goals.
My desire to discuss it was because,
I'd read the NHS were promoting such diets to anyone with a BMI over 30, (it seems that it maybe media hype) so my questions were because I wondered what the issues might be if I chose to go on this diet. My BMI is 31 and I run 3 to 4 times a week.3 -
I've just looked at this article and there is a section in it that asks that you see if the 800 cal diet is suitable for you. It told me that my BMI is 33.4 [which I know] and that I could see my doctor with a view to going on the diet. It also said if I was already on a weight reduction plan to stay with it. However, it did not ask me whether I was either pre -diabetic or diabetic. In fact I am neither and will carry on with MFP.2 -
andysport1 wrote: »My desire to discuss it was because,
I'd read the NHS were promoting such diets to anyone with a BMI over 30, (it seems that it maybe media hype) so my questions were because I wondered what the issues might be if I chose to go on this diet. My BMI is 31 and I run 3 to 4 times a week.
Oh - I wasn't "targeting" you with that. Just "verbalizing" my own response. I have a tough time discussing things without bias that I have a strong personal bias against, that's all.
When I saw the "promoting" I was a little shocked myself.2 -
andysport1 wrote: »
My desire to discuss it was because,
I'd read the NHS were promoting such diets to anyone with a BMI over 30, (it seems that it maybe media hype) so my questions were because I wondered what the issues might be if I chose to go on this diet. My BMI is 31 and I run 3 to 4 times a week.
The diet is most definitely not recommended for active people, especially active males. And a BMI of 31 qualifies as barely obese. I am at about the same BMI and also exercise, and if I ate less than 2000 on days I exercised I'd feel extremely fatigued. You should eat at a normal deficit with normal calorie amounts. Do not try this.5 -
suziecue25 wrote: »
I've just looked at this article and there is a section in it that asks that you see if the 800 cal diet is suitable for you. It told me that my BMI is 33.4 [which I know] and that I could see my doctor with a view to going on the diet. It also said if I was already on a weight reduction plan to stay with it. However, it did not ask me whether I was either pre -diabetic or diabetic. In fact I am neither and will carry on with MFP.
To be fair, the calculator is from the BBC, not the NHS. And the calculator does say you should only do the diet for 12 weeks or once you reach a BMI of 25, whichever comes sooner.
I think it also bears mentioning this 800 cal diet is not just someone eating 800 cals. It is obtaining a liquid meal replacement diet program. I would assume this is to make sure there is proper nutrition included in that 800 cals.
Regardless, anything I'm seeing that is direct from the NHS is saying, their data "seems" promising and they think it's worth it for obese folks with diabetes to consult a doctor regarding the program. It is media outlets that seem to be directing it toward anyone with a specific BMI.4
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