Humans have been eating a diet of grains, fruits, and vegetables for more than 100,000 years, says new research from the University of Calgary. Archeologists from Canada recently came to this conclusion after uncovering stone tools at a dig site in southeastern Africa. Previous to the discovery, scientists believed homo sapiens only ate grain for the past 20,000 years. This find suggests that the diet of early man was far more diverse—and the digestive system far more advanced—than formerly believed. Research suggests that primitive grain dishes consumed by humans included flours, beverages, and porridges.