Here are some more mainstream sources. All "official" output on these subjects are heavily regulated and lobbied by corporate interests however. Further problem is that western culture is far too heavily empirical, whereas axiomatic/rationalist viewpoints on nutrition are often true and logical - it's just that nobody has paid the $$$ to "prove" them in a non-replicable study. However, my axiomatic broscience is frowned upon in the empiricist cult of the silicon valley so I have only linked to fairly establishment sources here. Still good for the basics
https://www.nhs.uk/conditions/tooth-decay/
"Tooth decay is damage to a tooth caused by dental plaque turning sugars into acid."
https://www.nhs.uk/change4life/food-facts/sugar
https://www.health.com/condition/type-2-diabetes/high-blood-...