Newish research shows that once you've been overweight and lost it you will need less calories a day than someone who has never been overweight.
Hi Barbara,
Here is a link to an article by a bariatric surgeon which
partly explains this phenomenon:
Arya M. Sharma, MD: Fat Chance Rob Ford, Diets Don't Work
Thus, while restricting caloric intake to 1400 calories (or less) together with 60 minutes of daily exercise will let anyone lose weight -- keeping the weight off requires exactly that -- eating less than 1400 calories and committing to 60 minutes of daily exercise forever!
This is the reason why most diets fail. For *most* of us restricting our calories to an "abnormally" low amount and trying to combat hunger on a daily basis is often possible for SHORT periods of time (up to 6 months, sometimes even a year) ..... but
maintaining the weight then lost and
STILL having to stick to less than 1500 cals a day and regular exercise defeats 95% of all but the most dedicated dieters
without the assistances of weight loss surgery.
Increase caloric intake to just 1500 calories or cut back to just 50 mins of exercise, even for a few days, and the weight comes back. The metabolism of a 300-pound individual, who has dieted himself down to 200 pounds will never be that of someone who has always been 200 pounds. While the former will forever struggle to survive on 1400 calories to keep the weight off, the latter can happily continue eating his daily 2400 calories while effortlessly maintaining his 200 pounds forever -- who said life is fair?
Dr Sharma has written many similar articles on his own blog (I will not repeat all links again) and I wrote a thread about this some months ago
(if you use the "Search" facility in the green toolbar and use the "Advanced" option and search for "Threads started by" Sharonimo you should find it eventually! ...... towards the beginning of my posting history, one of my early threads -- titled something like "Science: why diets don't work and weight loss surgery does").
IN SHORT -- THE ADVANTAGES WLS HAS OVER REGULAR DIETS:
1. The drastic nature of surgery promotes a
large weight loss in the first six months.
2. After a patient has reached goal weight WLS (whichever version -- band, sleeve or bypass) acts as a
permanent appetite suppressant and control on the hunger valve that we all previously found so difficult to fight after previous weight loss attempts.
3. WLS also acts as a permanent "portion control" device, as none of us will ever be able to eat as large a plateful as we did before.
4. Weight loss surgery
enables patients to
survive on 1400 - 1500 calories a day
without feeling hungry, and without feeling deprived. (For many post WLS people getting that many calories in takes some effort.)
In one of his many articles Dr Sharma (having surveyed his patients on their average eating habits) did come up with a figure, suggesting that the
average post bariatric surgery patient does survive on only approx
1400 calories a day.