For education only, not medical advice. Ask your doctor before you change your diet or any medication.

Nathan Pritikin

Engineer and inventor. Inventor who created the Pritikin Program (1915 to 1985).

Nathan Pritikin was an American engineer and inventor. After a heart disease diagnosis in 1958 he studied the research himself, designed a very low fat diet with daily exercise, and in 1976 opened the Pritikin Longevity Center in California.

Best known for

The Pritikin Program for Diet and Exercise (1979), which made very low fat eating and daily walking a mainstream idea. McDougall, Ornish, Esselstyn and Barnard all built on his work.

Approach

Under 10% of calories from fat, mostly complex carbohydrates, little cholesterol and salt, and daily walking. The diet is not vegan: small amounts of fish, poultry and nonfat dairy are allowed.

Main talking points

  • Fat, cholesterol and salt drive heart disease, so cut them hard.
  • Exercise is part of the treatment, not an option.
  • Whole grains, vegetables, fruit and beans form the base of every meal.
  • He tested the diet first on himself and tracked his own heart disease markers.

Sources

A short profile in our own words, for education only; it reports what Nathan Pritikin teaches and is not medical advice. Last checked 2026-10-10. How we make this site