You can get paranoid and say somebody is deliberately keeping it out of the curriculum at medical schools, it's not in the text books it's not in the standard books that doctors read. But I think what happened was back in the 40's and early 50's they discovered they could utilize the patented synthetic drugs and they could create birth control pills from the synthetic and not from the real hormone and they could make millions of dollars. They funded more research just for that and there was no more funding for the real hormone.
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