Common autism supplement can promote and repress cancer
A recent study of the flavonoids luteolin (given for pediatric autism spectrum disorders) and quercetin, the results were a bit surprising. In regards to breast cancer, researchers found that luteolin blocks some of the endocrine effects of progesterone. But regarding endometrial cancer, they found luteolin had negative effects.
http://www.sciencedaily.com/releases/2013/07/130715151158.htm