Could you post the research that implicates polyphenols in cancer? I could not find any in-vivo studies linking polyphenols to cancer in a quick search. A revie

Could you post the research that implicates polyphenols in cancer? I could not find any in-vivo studies linking polyphenols to cancer in a quick search. A review article from 2017 states the opposite in fact: "...polyphenols in particular have gained considerable attention as chemopreventive agents against different types of cancer." https://www.ncbi.nlm.nih.gov/pubmed/28807562 https://www.ncbi.nlm.nih.gov/pubmed/28807562