Blue Zones: People Live Exceptionally Reaching 90 or 100 Years

*By Dr Devan 

Blue Zones are regions of the world where people live exceptionally long lives — often reaching 90 or 100 years — and remain relatively healthy while doing so. The term was coined by Dan Buettner, a National Geographic Fellow and author, who, along with demographers and scientists, identified and studied these longevity hotspots.

The 5 Official Blue Zones

Okinawa, Japan

World’s highest concentration of female centenarians.

Plant-based diet (vegetables, tofu, sweet potatoes), strong social bonds (“moai” groups), active lifestyles, and a philosophy of ikigai (purpose in life).

Sardinia, Italy (specifically Ogliastra region)

Exceptionally high number of male centenarians.

Diet rich in whole grains, beans, garden vegetables, goat’s milk, and red wine.

Strong family ties and daily physical activity (shepherding, farming).

Nicoya Peninsula, Costa Rica

Very high life expectancy, even into old age.

Diet based on beans, corn, squash, and tropical fruits.

“Plan de vida” (life purpose), strong community bonds, and natural calcium-rich water.

Ikaria, Greece

Low rates of cancer, heart disease, and dementia.

Plant-heavy Mediterranean diet with wild greens, beans, olive oil, and herbal teas.

Afternoon naps, low stress, and strong social networks.

Loma Linda, California, USA

Home to a large community of Seventh-day Adventists, who live 7–10 years longer than average Americans.

Mostly vegetarian diet, no smoking, limited alcohol, strong faith-based community, regular exercise, and rest (Sabbath).

Common Lifestyle Traits of Blue Zones (“Power 9” identified by Buettner)

Move naturally — daily walking, gardening, manual work.

Purpose — having a reason to wake up each day.

Downshift — managing stress with rituals (prayer, naps, tea, meditation).

80% rule — stop eating before full (“hara hachi bu” in Okinawa).

Plant-slant diet — mostly beans, vegetables, whole foods, little meat.

Moderate wine (except Adventists) — especially red wine with meals.

Belonging — part of a faith-based community.

Family first — investing time in children, partners, elders.

Social circles — supportive, like-minded friends.

In short:

Blue Zones are places where people live the longest, healthiest lives, largely due to diet, lifestyle, social structure, and purpose — not genetics alone.

*Dr Devan is a Mangaluru-based ENT specialist and author.