Good sources of iron include liver, kidneys, red meat, poultry, eggs, peas, legumes, dried fruits and dark, green leafy vegetables. Three ounces of cooked chicken liver contains 7.2 mg of iron; a cup of cooked spinach contains 6.4 mg. Your health care professional will probably recommend iron supplements during pregnancy (probably starting at 30 mg per day).
One of the challenges in assessing progress in this area is the number of clinical studies that either do not report the gender of the subjects or lack the statistical power to detect gender differences. These were still issues in 2014, and further compounded by the fact that the majority of animal studies also exclude females or fail to account for differences in sex and gender. for instance despite the higher incidence of depression amongst women, less than half of the animal studies use female animals. Consequently, a number of funding agencies and scientific journals are asking researchers to explicitly address issues of sex and gender in their research.
In addition to diet, exercise and other lifestyle factors can also play an important role in bone health. Smoking and drinking too much alcohol can increase your chances of developing osteoporosis, while weight-bearing exercise (such as walking, dancing, yoga, or lifting weights) can lower your risk. Strength or resistance training—using machines, free weights, elastic bands, or your own body weight—can be especially effective in helping to prevent loss of bone mass as you age.