Physical activity and modernization: Heart disease indicators almost non-existent among Tsimane, indigenous population

Heart disease continues to be the leading cause of death in the United States, and a sedentary lifestyle is often cited as a major contributing factor. Among the Tsimane, an indigenous population in the lowlands of Bolivia's Amazon basin, however, indicators of heart disease are practically non-existent –– cholesterol is low, obesity is rare, and smoking is uncommon.

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