Home / The Library / The Japanese Secret to Longevity

Japanese longevity examined through the research rather than the folklore. Covers the Okinawan cohort studies and what happened as diets shifted, the role of social structure and moai, physical activity patterns, and dietary composition — with attention to where correlation has been over-read as causation.
View on Amazon →Hara hachi bu has become a familiar phrase, but the research behind Okinawan longevity is considerably wider than the name alone suggests. This book goes to the actual cohort studies, what they measured, and, just as tellingly, what happened to health outcomes as local diets shifted away from tradition in later generations.
Moai, the lifelong social groups common in Okinawa, get treated as a longevity factor in their own right, separate from diet, alongside the physical activity patterns typical of the longest-lived generations and the full dietary composition behind the famous phrase. The book is equally direct about where correlation in this research has been over-read as causation.
For readers who want the research behind Okinawan longevity, not just the phrase hara hachi bu repeated without its context.