Quote Originally Posted by maillotpois View Post
Your body apparently can't absorb calcium without the hormones (estrogen I believe) present in a regular menstrual cycle.

So this is a bit of a drift from topic, and I'm sorry if it's a stupid question (I know very little about biology/physiology) . . . What about the new birth control pills where you only have 1 period a year? Does this pose problems with calcium absorption? Or do the hormones in the pills keep everything reasonably balanced?