Wacky hormones: When our hormones go up and crash down like the stock market, it can effect how much serotonin we have in our brains which in turn can effect our moods. Some of us are more sensitive than others to these changes.
Answered 3/1/2019
6.1k views
Exact cause unknown: But it seems related to fluctuating level of hormones including estrogene and Progesterone
Answered 9/28/2016
5.6k views
Unclear: Although the exact cause of premenstrual syndrome is unknown, we do know how to treat it. Ssri antidepressants like zoloft (sertraline) and Prozac can be very helpful. Hormone replacement has also be shown to be helpful.
Answered 6/30/2014
5.9k views
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