Price abandoned his lucrative practice to travel the world—he spent the decade 1925 to 1935 visiting primitive cultures and industrializing countries, in order to understand the anthropology of tooth decay, heart disease, and cancer. Irrespective of the race of the isolated groups that he studied—be they Inuit, Swiss or Peruvian Indian mountaineers, Australian Aborigines, Kenyan Watusi or Maasai—Price found that they universally maintained near-perfectly aligned teeth and jaws, as well as no dental caries, as long as they followed their traditional diets.
