In california this stuff is banned,cancer causing, another source says all wild yam progesterone is ineffective. Who's telling the truth? All I know is that since I've been using this I sleep better, sweat less and generally feel better. I am 63 yrs old,used estrogen for years then quit due to possible heart/stroke complications. What to do? Nothing and misery for 4 yrs till I found this cream. Is it harmful? I don't know but I'm going to keep using it