The Masai of Tankanika, Chewya of Kenya, Muhima of Uganda, Watusi of Ruanda and the Neurs tribes on the western side of the Nile in the Sudan were all cattle-keeping people. Their diets consisted largely of milk, blood and meat, supplemented in some cases with fish and with small amounts of grains, fruits and vegetables. Rich in animal fats, these diets provided large amounts of the fat-soluble vitamins Price discovered to be so necessary for proper development of the physical body and freedom from disease.

These tribes were noted for their fine physiques and great height—in some groups the women averaged over 6 feet tall, and many men reached almost seven feet. Examinations of their teeth revealed very few caries, usually less than 0.5%. Nowhere in his travels had Price yet found groups that had no cavities at all, yet among the cattle-herding tribes of Africa, Dr. Price found six tribes that were completely free of dental decay. Furthermore, all members of these tribes exhibited straight, uncrowded teeth.

Largely vegetarian Bantu tribes such as the Kikuyu and Wakamba were agriculturists. Their diet consisted of sweet potatoes, corn, beans, bananas, millet and Kafir corn or sorghum. They were less robust than their meat-eating neighbors, and tended to be dominated by them.

"The natives of Africa know that certain insects are very rich in special food values at certain seasons, also that their eggs are valuable foods.

It is significant that the vegetarian groups practiced the feeding of special foods during gestation and lactation. Apparently carnivorous groups found no need to supplement the diet, as it was already rich in the factors needed for reproduction and optimum growth. The healthiest tribe that Price studied was the Dinkas, a Sudanese tribe on the western bank of the Nile. They were physically better proportioned and had greater strength than any of the other tribes. Their diet consisted mainly of fish and cereal grains.

This is perhaps the greatest lesson of Price's African research—that a diet of whole foods, one that avoids the extremes of the carnivorous Masai and the largely vegetarian Bantu, but incorporates both nutrient dense grains and seafood, ensures optimum physical development.

Vegan and vegetarian parents deny their children the essential nutrients that our ancestors and even the most primitive of tribes know are essential for optimal human growth and development.