Iron: Essential for healthy blood cells, iron becomes especially important when girls begin to menstruate. With each period, a woman loses small amounts of iron. “About 10% of American women are iron deficient,” says Dorothy Klimis-Zacas, PhD, a professor of nutrition at the University of Maine and co-editor of Nutritional Concerns of Women (CRC Press, 2003). “About 5% have iron deficiency anemia.” Symptoms of low iron include fatigue, impaired immunity, and poor performance at school or work.
Manson, JoAnn E.; Chlebowski, Rowan T.; Stefanick, Marcia L.; Aragaki, Aaron K.; Rossouw, Jacques E.; Prentice, Ross L.; Anderson, Garnet; Howard, Barbara V.; Thomson, Cynthia A.; LaCroix, Andrea Z.; Wactawski-Wende, Jean; Jackson, Rebecca D.; Limacher, Marian; Margolis, Karen L.; Wassertheil-Smoller, Sylvia; Beresford, Shirley A.; Cauley, Jane A.; Eaton, Charles B.; Gass, Margery; Hsia, Judith; Johnson, Karen C.; Kooperberg, Charles; Kuller, Lewis H.; Lewis, Cora E.; Liu, Simin; Martin, Lisa W.; Ockene, Judith K.; O'sullivan, Mary Jo; Powell, Lynda H.; Simon, Michael S.; Van Horn, Linda; Vitolins, Mara Z.; Wallace, Robert B. (2 October 2013). "Menopausal Hormone Therapy and Health Outcomes During the Intervention and Extended Poststopping Phases of the Women's Health Initiative Randomized Trials". JAMA. 310 (13): 1353–1368. doi:10.1001/jama.2013.278040. PMC 3963523. PMID 24084921.
Income-generation interventions largely target adult women (women of reproductive age, women with young children, and older women). Many microfinance and loan programs are targeted to women because of their likelihood to pay back the loans, although women with lower education levels and smaller businesses do not benefit to the same degree as women who are educated or who have bigger businesses (165). There was limited evidence of such interventions targeting adolescent girls (169). In order to understand the potential impact of income-generating activities on adolescents, more information is needed about the pathways by which adolescents contribute to their own food security, the degree to which they rely on their caregivers to meet their nutritional needs, and how those dynamics change with the age of adolescents (169). Training, workshops, and extension activities were often delivered through community centers, community groups, and financial institutions (165). Other affiliated interventions, such as agricultural extension and nutrition education, were provided at the community level and at home visits (160, 173). These delivery platforms were effective at reaching women, including low-income women, particularly when they engaged with existing community groups (e.g., self-help, farmers’, and women's groups) (160, 161, 167, 169, 172, 173).
Women and men have approximately equal risk of dying from cancer, which accounts for about a quarter of all deaths, and is the second leading cause of death. However the relative incidence of different cancers varies between women and men. In the United States the three commonest types of cancer of women in 2012 were lung, breast and colorectal cancers. In addition other important cancers in women, in order of importance, are ovarian, uterine (including endometrial and cervical cancers (Gronowski and Schindler, Table III).[6][120] Similar figures were reported in 2016.[121] While cancer death rates rose rapidly during the twentieth century, the increase was less and later in women due to differences in smoking rates. More recently cancer death rates have started to decline as the use of tobacco becomes less common. Between 1991 and 2012, the death rate in women declined by 19% (less than in men). In the early twentieth century death from uterine (uterine body and cervix) cancers was the leading cause of cancer death in women, who had a higher cancer mortality than men. From the 1930s onwards, uterine cancer deaths declined, primarily due to lower death rates from cervical cancer following the availability of the Papanicolaou (Pap) screening test. This resulted in an overall reduction of cancer deaths in women between the 1940s and 1970s, when rising rates of lung cancer led to an overall increase. By the 1950s the decline in uterine cancer left breast cancer as the leading cause of cancer death till it was overtaken by lung cancer in the 1980s. All three cancers (lung, breast, uterus) are now declining in cancer death rates (Siegel et al. Figure 8),[121] but more women die from lung cancer every year than from breast, ovarian, and uterine cancers combined. Overall about 20% of people found to have lung cancer are never smokers, yet amongst nonsmoking women the risk of developing lung cancer is three times greater than amongst men who never smoked.[119]
Osteoporosis ranks sixth amongst chronic diseases of women in the United States, with an overall prevalence of 18%, and a much higher rate involving the femur, neck or lumbar spine amongst women (16%) than men (4%), over the age of 50 (Gronowski and Schindler, Table IV).[6][7][128] Osteoporosis is a risk factor for bone fracture and about 20% of senior citizens who sustain a hip fracture die within a year.[6] [129] The gender gap is largely the result of the reduction of estrogen levels in women following the menopause. Hormone Replacement Therapy (HRT) has been shown to reduce this risk by 25–30%,[130] and was a common reason for prescribing it during the 1980s and 1990s. However the Women's Health Initiative (WHI) study that demonstrated that the risks of HRT outweighed the benefits[131] has since led to a decline in HRT usage.
Not everyone who is underweight suffers from an eating disorder, but anorexia and bulimia are serious health problems in this country; an estimated 500,000 women suffer from anorexia, and 1 to 2 million women struggle with bulimia. Women with anorexia nervosa starve themselves and/or exercise excessively, losing anywhere from 15 percent to 60 percent of their normal body weight. Some die. Women with bulimia nervosa binge on large quantities of food—up to 20,000 calories at one time—and then try to get rid of the excess calories. Some purge by inducing vomiting, abusing laxatives and diuretics or by taking enemas. Others fast or exercise to extremes.
Women's health refers to the health of women, which differs from that of men in many unique ways. Women's health is an example of population health, where health is defined by the World Health Organization as "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity". Often treated as simply women's reproductive health, many groups argue for a broader definition pertaining to the overall health of women, better expressed as "The health of women". These differences are further exacerbated in developing countries where women, whose health includes both their risks and experiences, are further disadvantaged.