A very interesting discussion. I believe that just like to fight certain illnesses the future seems to be personalized and targeted therapies based on DNA, the same could be said about whether a diet is more beneficial than others for certain individuals. Genetic differences can influence metabolism and how individuals process certain nutrients, which can also affect food preferences. I believe that as long as processed foods and chemicals are avoided or become a very small % of what you eat, you need to find what makes you feel best. Vegetarian, omnivore, carnivore, etc. A simple blood work will tell you if you are going in the right direction, along with your levels of energy, quality of sleep and skin, hair and nails appearance. Not getting sick often is obviously another good indicator.