Why Calories Count by Nesheim Malden Nestle Marion

Author:Nesheim, Malden, Nestle, Marion
Language: eng
Format: epub
Publisher: University of California Press

Thermic Effects of Food

Eating, as we explained in chapter 7, induces a measurable rise in heat production. Perhaps some people burn off more of the extra calories as heat? Although this idea sounds promising, research to date suggests that thermic effects are unlikely to be a major way to get rid of excess energy. Instead, studies conclude that heat losses from thermic effects increase in proportion to the number of calories in a meal. Just as larger bodies produce more heat, so do larger meals. And when people eat too much, they gain weight—mainly body fat—in proportion to the number of excess calories consumed. Larger bodies take more calories to maintain and move, but meal size is the critical factor. Large and small people who eat meals of the same nutrient composition and number of calories lose the same amount of heat from thermic effects.2

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