Not all birth controls are equal, some are linked to higher risk of brain tumors, study finds

Meningiomas are the most common brain tumors in adults, accounting for 38% to 42% of all primary central nervous system tumors.

According to 2021 WHO data, 874 million of the world's 1.9 billion women of reproductive age use modern contraceptive methods.

Many of these methods contain high doses of certain progestogens, a synthetic version of progesterone, a hormone that plays a key role in the menstrual cycle and pregnancy.

So what does birth control have to do with meningioma? ...