Why Progesterone Is Both Good and Bad for Mood (and How to Treat PMDD)
Progesterone is the hormone that calms the brain and promotes sleep. At the same time, progesterone might be involved in the mood symptoms of premenstrual dysphoric disorder (PMDD).
How can both things be true? The short answer is that progesterone is usually good for mood but can sometimes be bad. Keep reading for the longer answer about progesterone and mood.