Many women do not have access to basic sanitary products like pads and tampons, much less medications for period pains or apps to track their menstrual cycle. — AFP
One of the biological roles of females is to perpetuate the human species during their reproductive years, i.e. the time from menarche, when menses (periods) start, to menopause, when menses cease.
The menses are the shedding of blood from the uterine lining.