Sally Fallon, nutrition researcher, author, and founder of the Weston A. Price Foundation (WAPF), told The Epoch Times that animal fat is the most important part of the diet. "Animal fats are essential for life; they were the most highly valued part of the diet of traditional cultures," said Fallon. The WAPF is based on the works of a renowned dentist named Dr. Weston A. Price. Price roamed the continents and studied the diet of many indigenous populations, of which he identified 14 to be the healthiest based on their teeth and bone health.