Chapter 6: The Heart That Remembers the Savannah
The Tsimane people of Bolivia have the lowest rates of heart disease ever recorded in any population. Their secret isn't a pill -- it's 17,000 steps a day and a life their DNA recognizes.
◆ Key Insights
85% of Tsimane adults have zero coronary artery calcium -- their 75-year-olds have the arteries of American 50-year-olds
Tibetans inherited a gene from Denisovans (an extinct human species) that lets them thrive at altitudes where others get strokes
Ancestral humans consumed 10x more potassium than sodium; the modern diet has completely reversed this ratio
Your heart was built for 4-6 hours of daily movement -- and the modern world gives it almost none
VO2 max is emerging as the single strongest predictor of all-cause mortality -- stronger than smoking status or blood pressure
Read the full chapter to learn what your cardiovascular system actually expects -- and why age-related blood pressure rise isn't normal.
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