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SarahC comments on Rational Health Optimization - Less Wrong
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This is really interesting; thank you. I'm curious what your sources on diet (which I would like to see more of) say about variety in the dietary needs of modern humans. Even if you discount the extremes (totally sedentary people and professional athletes), people may for example put on muscle and fat very differently from one another due to both genetic differences and lifestyle choices. Would any common variations that you know of--for example, regularly getting more exercise than recommended, or having a genetic tendency for a skinny or fat body type--alter your advice?
By the way, there's a typo in the diet section: "potassium to suite diet."
Individual variety in nutrition and response to food and exercise is really interesting, and it seems to occupy a weird gray area between science and craft. I'd like to learn more about this.
One example I've seen (more from the fitness/nutrition community than the scientific community) is that people respond differently to carbohydrates -- I think it's variation in insulin response. Try eating a big meal of pancakes and syrup. Some people will feel sluggish soon after; some people will be energized. Some people are always mildly unwell on a high-carb diet: tired, hungry, gastric distress. Some people do fine. (I'm in the mildly unwell camp, only I didn't know it until I experienced what it was like not to be mildly unwell.)