3 things that can cause painful periods - Chen X. Chen

Dig into the science of what makes period cramps so painful, and find out what we still don’t know about this common experience. -- Period pain affects hundreds of millions of people. Anywhere from 50 to 90% of people who menstruate deal with painful abdominal or pelvic cramps during their period. Individual experiences can vary, from mild discomfort, to throbbing aches, to contraction-like cram