If cane sugar is the worst “natural” sweetener, why was diabetes so rare before the sudden increase of diabetes in the 20th century?

Question

I know around the middle of the 20th century vegetable oils, synthetic sweetener became a thing. But statistic wise doesn’t make sense, even if before it caused tooth problems, but not diabetes.

In: Biology

Answer 1

Diabetes is not only caused by consuming natural sugars. Highly processed foods mainly those high in carbohydrates have contributed a great deal. The whole low-fat marketing campaign also contributed as those products were high in artificial sweeteners to add flavor. All these exploded in the 20th century.