Now this is interesting: a study that shows healthy eating has no effect. An eight-year study showed no significant difference in cancer, disease, or obesity levels between the control group and those on a low-fat, high-fiber diet. What does this mean? Does it not matter at all what you eat? [NPR has a bit more sensible advice](http://www.npr.org/templates/story/story.php?storyId= 5194730): eating less fat does not make you any healthier, but the kinds of fats you consume can. Same with carbohydrates. There aren’t whole categories of food you should systematically cut out of your diet, but the quality of those foods does make a difference. The total number of calories consumed, whatever the source, also matters. And even if eating fresh, whole foods doesn’t make me a healthier person, they still taste better!