Plant Slant

The Adventist Health Studies

The Adventist Health Study (AHS-1 and AHS-2) followed over 73,000 Seventh-day Adventists in Loma Linda, California — one of the five original Blue Zones. AHS-1 found that Adventist vegetarian men lived 9.5 years longer and women 6.1 years longer than non-Adventist Californians.

AHS-2 showed that vegetarian diets were associated with a 12% reduction in all-cause mortality. Pesco-vegetarians had the lowest risk (HR: 0.81), followed by vegans (HR: 0.85) and lacto-ovo vegetarians (HR: 0.91). Vegetarian diets also significantly reduced cardiovascular, renal, and endocrine mortality.

Beans: The Longevity Superfood

A landmark international study identified legume intake as the single strongest dietary predictor of survival in older adults across cultures. Just 20 grams per day (roughly two tablespoons) was linked to an 8% lower risk of death. Blue Zone populations consume at least four times more beans than the average American.

Beans provide plant protein, complex carbohydrates, and fibre. They regulate blood sugar, support gut health, and are rich in polyphenols and flavonoids that fight inflammation and oxidative stress. Emerging research suggests they may even slow cellular ageing by influencing telomere length.

Diet Accounts for Half the Advantage

Dr. Michael Greger’s analysis of Blue Zone research concludes that diet alone accounts for approximately half the longevity advantage seen in these populations. This makes Plant Slant the single highest-impact lever any community can control.