Women's health is an example of population health, where health is defined by the World Health Organization (WHO) 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. While the rates of the leading causes of death, cardiovascular disease, cancer and lung disease, are similar in women and men, women have different experiences. Lung cancer has overtaken all other types of cancer as the leading cause of cancer related death in women, followed by breast cancer, colorectal, ovarian, uterine and cervical cancers. While smoking is the major cause of lung cancer, amongst nonsmoking women the risk of developing cancer is three times greater than among nonsmoking men. Despite this, breast cancer remains the most common cancer in women in developed countries, and is one of the major chronic diseases of women, while cervical cancer remains one of the most common cancers in developing countries, associated with human papilloma virus (HPV), a sexually transmitted infection. HPV vaccine together with screening offers the promise of controlling these diseases. Other important health issues for women include cardiovascular disease, depression, dementia, osteoporosis and anemia. In 176 out of 178 countries for which records are available, there is a gender gap in favor of women in life expectancy. In Western Europe, this has been the case at least as far back as 1750. Gender remains an important social determinant of health, since women's health is influenced not just by their biology but also by conditions such as poverty, employment, and family responsibilities. Women have long been disadvantaged in many respects such as social and economic power which restricts their access to the necessities of life including health care, and the greater the level of disadvantage, such as in developing countries, the greater adverse impact on health. Women's reproductive and sexual health has a distinct difference compared to men's health. Even in developed countries, pregnancy and childbirth are associated with substantial risks to women with maternal mortality accounting for more than a quarter of a million deaths per year, with large gaps between the developing and developed countries. Comorbidity from other non-reproductive diseases such as cardiovascular disease contribute to both the mortality and morbidity of pregnancy, including preeclampsia. Sexually transmitted infections have serious consequences for women and infants, with mother-to-child transmission leading to outcomes such as stillbirths and neonatal deaths, and pelvic inflammatory disease leading to infertility. In addition, infertility from many other causes, birth control, unplanned pregnancy, rape and the struggle for access to abortion create other burdens for women.
Definitions and scope Women's experience of health and disease differ from those of men, due to unique biological, social and behavioral conditions. Biological differences vary from phenotypes to the cellular biology, and manifest unique risks for the development of ill health. WHO defines health as "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity". Women's health is an example of population health, the health of a specific defined population. Women's health has been described as "a patchwork quilt with gaps". Although many of the issues around women's health relate to their reproductive health, including maternal and child health, genital health and breast health, and endocrine (hormonal) health, including menstruation, birth control and menopause, a broader understanding of women's health to include all aspects of the health of women has been urged, replacing "Women's Health" with "The Health of Women". WHO considers that an undue emphasis on reproductive health has been a major barrier to ensuring access to good quality health care for all women. Conditions that affect both men and women, such as cardiovascular disease, osteoporosis, also manifest differently in women. Women's health issues also include medical situations in which women face problems not directly related to their biology, such as gender-differentiated access to medical treatment and other socioeconomic factors. Women's health is of particular concern due to widespread discrimination against women in the world, leaving them disadvantaged. A number of health and medical research advocates, such as the Society for Women's Health Research in the United States, support this broader definition, rather than merely issues specific to human female anatomy to include areas where biological sex differences between women and men exist. Women also need health care more and access the health care system more than do men. While part of this is due to their reproductive and sexual health needs, they also have more chronic non-reproductive health issues such as cardiovascular disease, cancer, mental illness, diabetes and osteoporosis. Another important perspective is realising that events across the entire life cycle (or life-course), from in utero to aging effect the growth, development and health of women. The life course perspective is one of the key strategies of the World Health Organization.
Global perspective
Gender differences in susceptibility and symptoms of disease and response to treatment in many areas of health are particularly true when viewed from a global perspective. Much of the available information comes from developed countries, yet there are marked differences between developed and developing countries in terms of women's roles and health. The global viewpoint is defined as the "area for study, research and practice that places a priority on improving health and achieving health equity for all people worldwide". In 2015 the World Health Organization identified the top ten issues in women's health as being cancer, reproductive health, maternal health, human immunodeficiency virus (HIV), sexually transmitted infections, violence, mental health, non communicable diseases, youth and aging.
Life expectancy
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