Wikipedia
O-Desmethylangolensin
O-Desmethylangolensin (O-DMA) is a phytoestrogen. It is an intestinal bacterial metabolite of the soy phytoestrogen daidzein. It produced in some people, deemed O-DMA producers, but not others. O-DMA producers were associated with 69% greater mammographic density and 6% bone density.