Book by Sylvia Tara, PhD. Blows my mind!
Chapter 5. How fat fights to stay on you.
Researchers recruited (a) fat people who were at their highest weight for at least the past 6 months, and (b) normal weight people. All subjects lived in a hospital where their diets and exercise were strictly monitored. (They were allowed to go to work, etc.) First, subjects were given 800-calorie-per-day drinks composed of a standard % of fat/protein/carbo. They drank their meals daily until they lost 10% of their body fat. This usually took one to two months.
Next, after losing the weight, subjects were strictly monitored for weight gain, etc, while they were given 'maintenance' diets.
And here is the part that blows my mind. After a person has lost 10% of his body fat, his body needs 22% fewer calories to maintain the lower weight than a similar person who was never fatter. The lower metabolism after weight loss is REAL, and it is composed of 15% lower basal metabolism plus 25% lower metabolism during activity or exercise!
Just wondering - does this fit you? Do you know that you need fewer calories than mfp claims, just to maintain your weight? Or to lose weight?
Oh yes. I do recommend this book.