Some years ago, the science writer Rob Dunn published in Scientific American an article called The Hidden Truth About Calories. The article explained why two people could gain different amounts of weight even while eating the same diet. Visible differences do not begin to scratch the surface. There is a lot more going on underneath. For example, I recently read that the intestines of individuals of Russian descent appear to be five feet longer, on average, than those whose ancestors hail from Italy. That’s interesting… Continue reading →