The authors stressed it doesn't mean one causes the other.
At the clinic I rarely met women, young or old, who understand their fertility and what happens during the menstrual cycle. They all know about the blood, although not always why they bleed. But few know anything about what happens between periods. No one has told them. Why have we kept this information from young women? Why do we tell them they can get pregnant any time of the month? If it's to encourage young people to use protection when they have sex, it doesn't seem to work.
Women may be cheery one minute and angry the next — but whatever mood they're in, you officially can't blame their periods
When it's that time of the month, we females want nothing more than to cuddle up in our snuggie, eat loads of chocolate ice