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

Teeth problems could come from stone flour milling because bread acted like an emory board when being eaten.

The bigger issue with the advent of soda/soft drink has been the uptick of renal failure in places where these drinks or either more readily available, or affordable, than safe fresh water. Bottled water by equal qty is around 4 times more expensive.