In the mid 20th century the typical Japanese person got 6.9% of their calories from fat and 12.4% from protein, which means 80.7% from carbohydrates. Since then

In the mid 20th century the typical Japanese person got 6.9% of their calories from fat and 12.4% from protein, which means 80.7% from carbohydrates. Since then both fat and protein have gone up (due to Western influence?). It was 26.5% from fat and 15.9% from protein by 2000 [1], which means 57.6% from carbohydrates. I'm skeptical of any article that tries to pin American health problems on carbohydrates that does not at least mention Japan and try to explain why Japan was fine with a much higher percentage of carbohydrates than Americans eat. Clearly humans can in fact do fine on a very high carbohydrate diet, so if carbohydrates are a problem in America it has to be something about the particular kinds of carbohydrates we use or how we process or prepare them, not the mere fact that we use a lot of them. [1] https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/trends-in-total-energy-macronutrients-and-sodium-intake-among-japanese-findings-from-the-19952016-national-health-and-nutrition-survey/68DC310628856B56348D2F74B7AAFA07 https://www.cambridge.org/core/journals/british-journal-of-n...