The ability to determine if and when to become pregnant, is vital to a woman's autonomy and well being, and contraception can protect girls and young women from the risks of early pregnancy and older women from the increased risks of unintended pregnancy. Adequate access to contraception can limit multiple pregnancies, reduce the need for potentially unsafe abortion and reduce maternal and infant mortality and morbidity. Some barrier forms of contraception such as condoms, also reduce the risk of STIs and HIV infection. Access to contraception allows women to make informed choices about their reproductive and sexual health, increases empowerment, and enhances choices in education, careers and participation in public life. At the societal level, access to contraception is a key factor in controlling population growth, with resultant impact on the economy, the environment and regional development. Consequently, the United Nations considers access to contraception a human right that is central to gender equality and women's empowerment that saves lives and reduces poverty, and birth control has been considered amongst the 10 great public health achievements of the 20th century.
Vickers, M. R; MacLennan, A. H; Lawton, B.; Ford, D.; Martin, J.; Meredith, S. K; DeStavola, B. L; Rose, S.; Dowell, A.; Wilkes, H. C; Darbyshire, J. H; Meade, T. W (4 August 2007). "Main morbidities recorded in the women's international study of long duration oestrogen after menopause (WISDOM): a randomised controlled trial of hormone replacement therapy in postmenopausal women". BMJ. 335 (7613): 239. doi:10.1136/bmj.39266.425069.AD. PMC 1939792. PMID 17626056.
Amongst non-governmental organizations (NGOs) working to end child marriage are Girls not Brides, Young Women's Christian Association (YWCA), the International Center for Research on Women (ICRW) and Human Rights Watch (HRW). Although not explicitly included in the original Millennium Development Goals, considerable pressure was applied to include ending child marriage in the successor Sustainable Development Goals adopted in September 2015, where ending this practice by 2030 is a target of SDG 5 Gender Equality (see above). While some progress is being made in reducing child marriage, particularly for girls under fifteen, the prospects are daunting. The indicator for this will be the percentage of women aged 20–24 who were married or in a union before the age of eighteen. Efforts to end child marriage include legislation and ensuring enforcement together with empowering women and girls. To raise awareness, the inaugural UN International Day of the Girl Child[a] in 2012 was dedicated to ending child marriage.
Consult your health care professional. Women of childbearing age may want to consider taking folic acid supplements to reduce the risk of having a pregnancy affected with neural tube defects. Many women and teenage girls don't get enough calcium or vitamin D, both of which are critical to healthy bones and avoiding osteoporosis. Some people with diabetes appear to benefit from chromium. Vegetarians, especially vegans, may want to consider supplements to obtain nutrients they aren't getting from animal products.