A sudden restriction of blood flow to the brain. That's how scientists have traditionally explained why people faint. But several mysteries remain: What causes someone's blood flow to spontaneously ...

Cutting off blood flow can prematurely age the bone marrow, weakening the immune system’s ability to fight cancer, according to a new study from NYU Langone Health. Published online August 19 in JACC: ...

Amid widely differing capacities of available menstrual hygiene products, a menstrual disc - similar in shape to a diaphragm - may be best for dealing with heavy monthly blood flow as well as ...