Without modern medical intervention, the carb-rich diet most humans have been eating for the past 12 millennia causes health problems such as tooth decay. So "w

Without modern medical intervention, the carb-rich diet most humans have been eating for the past 12 millennia causes health problems such as tooth decay. So "we've been doing it for thousands of years and it hasn't made us extinct" is not synonymous with "we've been doing it for thousands of years and it's made us healthy".