Food Choices May Affect Your Ability to Keep Weight Off

A study published in the Journal of the American Medical Association in June looked at how the combination of carbohydrate, fat and protein in your diet may affect your body’s ability to keep off the weight you’ve lost. That’s because your body can distinguish between calories from different sources.

It is believed that after you lose weight your body begins to use fewer calories to perform bodily activities than it did when you were dieting, and this leads to regaining the weight. The researchers in this study wanted to evaluate this theory’s validity by examining how three diets that were very different in the amount of carbs, fat and protein they incorporated affected energy expenditure.

The study participants  were 21 overweight and obese young adults with BMIs of 27 or greater. After losing from 10 percent to 15 percent of their weight, these participants were asked to randomly follow three types of diets:

  • A low-fat diet (60 percent of energy from carbohydrate, 20 percent from fat, 20 percent from protein
  • A low–glycemic index diet ( 40 percent from carbohydrate, 40 percent from fat, and 20 percent from protein
  • A very low-carbohydrate diet (10 percent from carbohydrate, 60 percent from fat, and 30 percent from protein

The participants remained on each diet for four weeks.

An analysis of the test results found that:

  • The low-fat diet used the least amount of calories to perform bodily functions, followed by the low–glycemic index diet, and the very low-carbohydrate diet
  • Even though the low-carbohydrate diet used the most calories of the three, there was a serious side effect – high levels of the stress response hormone cortisol, which can promote the development of body fat, cardiovascular disease, and make the body less able to use the natural insulin it produces to regulate blood sugar level.

The researchers noted that the low-glycemic index diet seemed to have benefits similar to the  very-low carbohydrate diet with fewer negative effects. This makes it a better option when choosing a post diet food plan to follow.


~ by chasm63 on July 17, 2012.

2 Responses to “Food Choices May Affect Your Ability to Keep Weight Off”

  1. Excellent issues altogether, you simply won a new reader. What would you suggest about your submit that you just made a few days ago? Any certain?

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