Peter Attia· MD
when I think about PMS I think about it purely through the lens of the endocrine system right I think of it purely through the lens of when a woman is in her luteal phase that progesterone level has to rise for the placenta and then of course virtually every time it's a false alarm you don't need it you shed that lining and that progesterone level comes crash down and it's this crashing down a progesterone that has always interested me