| Different nutrients are processed differently by the body, fully in line with thermodynamics. Take 100 Calories of sawdust (cellulose). If you eat this, how many calories did you consume? Did consuming these calories contribute to fat accumulation? Because the answer to this is no, does this cause a violation of the 1st law? Your body doesn't merely "absorb calories" from food. It absorbs and transforms chemicals, and directs these chemicals through various pathways. Eating a low carbohydrate diet doesn't "shock his metabolism" into being less efficient, it simply uses different pathways for nutrient absorption. Also, regarding the referenced study: All four diets tested were virtually identical regarding the % calories derived from fat, protein, and carbohydrate. http://content.nejm.org/content/vol360/issue9/images/large/0... Moreover, the low-fat diets weren't particularly low-fat, and the high-fat (low-carb) diets weren't particularly low-carb. So what happens when you feed a group of people the same 1600 Calorie diet for two years, and then measure their weight loss? What exactly are you demonstrating? |
