I recently read an article from the Weizman Institute of Science that explained how a good diet for one person can be a bad diet for another person. In this study, the scientists followed 800 people over the course of 47,000 meals and monitored the blood sugar levels after eating. Through this study they found that identical meals triggered huge differences in post-meal blood sugar levels. For one lady who had a history of obesity and diabetes, her blood sugar spiked markedly after eating tomatoes. Now, aren't tomatoes supposed to be healthy? Maybe for you. Another person had a larger blood sugar spike after eating bananas than cookies. Another surprising finding. The premise that a diet can be good for one person and bad for another caught me by surprise at first because I'm constantly reading about the "next big" superfood or a cure-all diet plan. But then I thought about it and realized that I wasn't surprised at all. Intuitively I have learned what...