The dietary needs of humankind were forged into our genes millions of years in the past, extended before many of the foods that pollute our modern tables were first eaten by human beings, and the Paleo diet aims at boosting your health by returning you to the types of nourishment your ancestors ate for far longer than they have eaten grains and dairy products. The cavemen had no wheat, no domestic cattle, and no sugar, so all these foods are really harmful to the human system. More information: getting unstuck