Bestwifeever
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- Sep 17, 2007
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I think part of the reason weight loss is difficult to maintain, especially after getting to a goal weight and reintroducing less restricted portions of carbs and fats, for example, is something called the thermic effect of eating, which I believe has been well proven, as explained here, for example:
http://eatthis.menshealth.com/content/prime-your-metabolism?article=1&page=1
So if a post-weight loss diet includes more calories from fat and carbs, even if the total calorie count is the same as during weight loss, it is almost like adding more calories. Not that anyone would do this, but if one ate 2000 calories of only protein, up to 700 calories would be used in digestion. Eating 2000 calories of only fat and/or carbs, one would use up to 300 calories in digesting them--and effectively have 400 more calories for the body to metabolize for energy or to store for later. Or about 40 lbs a year weight gain if not burned up. This may be part of the reason why weight loss through low carb methods (or really any method) is difficult to maintain for people when the maintenance level changes the ratio of carbs/protein/fats even if the calorie intake is the same.
And if you look at old family photos going back generations, it is interesting to see the same body types repeating. As with many other things, choosing your ancestors may be the most important decision we can never make in terms of appearance, disease, and opportunity.
Roughly 10 percent of the calories you burn each day get burned by the act of digesting your food. But not all foods are created equal: Your body uses more calories to digest protein (20 to 35 calories burned for every 100 calories consumed) than it does to digest fats and carbohydrates (5 to 15 calories burned for every 100 calories consumed). That’s why adding lean, healthy protein to each meal and snack will help you burn more calories. Even better, protein can dull hunger and protect against obesity, diabetes, and heart disease.
http://eatthis.menshealth.com/content/prime-your-metabolism?article=1&page=1
So if a post-weight loss diet includes more calories from fat and carbs, even if the total calorie count is the same as during weight loss, it is almost like adding more calories. Not that anyone would do this, but if one ate 2000 calories of only protein, up to 700 calories would be used in digestion. Eating 2000 calories of only fat and/or carbs, one would use up to 300 calories in digesting them--and effectively have 400 more calories for the body to metabolize for energy or to store for later. Or about 40 lbs a year weight gain if not burned up. This may be part of the reason why weight loss through low carb methods (or really any method) is difficult to maintain for people when the maintenance level changes the ratio of carbs/protein/fats even if the calorie intake is the same.
And if you look at old family photos going back generations, it is interesting to see the same body types repeating. As with many other things, choosing your ancestors may be the most important decision we can never make in terms of appearance, disease, and opportunity.
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