Women's menstrual cycles, the approximately monthly cycle of changes in the reproductive system, can pose significant challenges for women in their reproductive years (the early teens to about 50 years of age). These include the physiological changes that can effect physical and mental health, symptoms of ovulation and the regular shedding of the inner lining of the uterus (endometrium) accompanied by vaginal bleeding (menses or menstruation). The onset of menstruation (menarche) may be alarming to unprepared girls and mistaken for illness. Menstruation can place undue burdens on women in terms of their ability to participate in activities, and access to menstrual aids such as tampons and "sanitary pads". This is particularly acute amongst poorer socioeconomic groups where they may represent a financial burden and in developing countries where menstruation can be an impediment to a girl's education.
Infertility means not being able to get pregnant after one year of trying (or six months if a woman is 35 or older). Women who can get pregnant but are unable to stay pregnant may also be infertile. About 10 percent of women (6.1 million) in the United States ages 15-44 have difficulty getting pregnant or staying pregnant, according to the Centers for Disease Control and Prevention (CDC).
In low- and middle-income countries, health care services often respond to acute health needs and many focus on maternal–child health (105, 106, 110, 112). The use of preventative care is limited, and there are concerns about the capacity of health systems to address noncommunicable diseases, such as diabetes, in low- and middle-income settings (108, 112). This has implications for the reach of integrated health care interventions across the life course. Maternal and reproductive health care is often sought by women when they are pregnant and in the early years of their children's lives (3, 113). Even so, many women visit health facilities late in their pregnancy or not at all (114–116). For adolescents and adult women, care is often not sought until they are sick (3, 117, 118). This is problematic for older women, in particular, as screening and treatment for age-related health issues, such as diabetes, cancer, and hypertension, require access to preventative health care services (3).
Getting enough water also is important. Many experts recommend at least eight 8-ounce glasses of water daily—more if you exercise frequently or are exposed to extremes of heat and cold. The 2010 Dietary Guidelines for Americans emphasize drinking more water and other calorie-free beverages, along with fat-free or low-fat milk and 100 percent fruit juices, instead of calorie-packed regular sodas.