Summary: https://slatestarcodex.com/2020/03/10/for-then-against-high-saturated-fat-diets/ I. In the 1800s, the average US man weighed about 155 lbs. Today, he weighs about 195. The change is even starker at the extremes. Someone at the 90th percentile of weight back then weighed about 185 lbs; today, he would weigh 320 lbs. Back then, about 1% of men were obese. Today, about 25% are. This puts a lot of modern dietary advice into perspective.
