Plant compounds like tannins, polyphenols, and oxalates can be toxic and potentially damage DNA.

“one of the more contrarian views that I hold and I advanced in my book is that polyphenols are actually harming us and I'll I'll show a study about that as well specifically with regard to curcumin I think that polyphenols are different plant defense molecules that's not even a question they're known to be fine oh Alexis resveratrol is a phyto Alexan molecule produced by grapes and peanuts in response to the botrytis fungus and so curcumin is a plant pigment but many polyphenols are fighting alexinnz so of course the whole point of a polyphenol is to damage DNA the whole point of a polyphenol is to do negative things in the animal that's eating the plant that's why plants involves many polyphenols again polyphenols can be fight alexinnz or they can be pigments”