Andrew Huberman· PhD
So there were two findings in that study that were negative. One was the small increase in the risk of heart disease, and the small increase in the risk of breast cancer. But consider the other group, we forgot about the group that didn't have a uterus. 'Cause remember, those women got estrogen only versus placebo. What was the difference in breast cancer there? Well, this is interesting 'cause it didn't reach statistical significance, but its P value was 0.06 or 0.07. So it came very close, but it was in the opposite direction. It was a 24% risk reduction, about one in a thousand as well.