The foods you eat can work to keep your bones strong as you age, and some can even help you replace lost bone mass. If you're a woman, you're at particularly high risk for osteoporosis, the brittle-bones disease. After menopause, declining estrogen stores cause women to start losing bone at a rate of 3 percent a year. Eighty percent of those suffering from osteoporosis are women, and many more women over the age of 50 have some degree of serious bone loss, which contributes to 1.5 million fractures annually. Hormone replacement therapy can help, but even if you choose to take estrogen, you can still benefit from the following changes in diet.