Longevity UnmaskedLongevity Unmasked

Question 134 of 433

What happened to Okinawa?

Crates of grains, legumes and sweet potatoes at a market

The short answer

It lost much of its advantage within two generations, as fast food and cars arrived.

Older Okinawans who grew up on sweet potatoes, vegetables, tofu, and constant movement are still remarkably healthy. Younger Okinawans now have some of the highest obesity rates in Japan. The change across generations suggests that environment matters greatly. It does not separate every contribution of genes, health care, and social conditions.

“This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship.” From the book’s medical disclaimer. Full disclaimer

Evidence scope
OBSERVATIONAL — Generational health changes in Okinawa; environmental contribution is plausible, not isolated experimentally.Evidence grade (draft mapping)CObservationalPart 10, Q134 · Part sources
All of Part 10

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