If you do decide to diet, you still need to maintain good nutrition. You want to cut back on calories, not nutrients. And while you want to reduce fat, don't eliminate it entirely. Some studies suggest that older women who maintain a higher body-fat percentage are less likely to suffer from osteoporosis and other conditions associated with menopause. Fat cells also retain estrogen, which helps maintain the calcium in your bones. Younger women should be careful, too: a low body fat percentage can lead to infertility; below 17 percent may lead to missed periods, also known as amenorrhea.
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.
What you eat is even more important as you enter your 40s. Women need protein (meat, fish, dairy, beans, and nuts), carbohydrates (whole grains), fats (healthy oils), vitamins, minerals, and water. These foods have been linked to some disease prevention, such as osteoporosis, high blood pressure, heart disease, diabetes, and certain cancers. The American Academy of Family Physicians supports the development of healthy food supply chains in supplemental nutrition programs so as to broaden the availability of healthy food.