Everyone knows that calcium is needed for strong bones-what you might not know is that low calcium is a frequent cause of stress fractures in active women. A stress fracture is a crack in the bone that occurs as a result of repetitive stress (12). It most frequently occurs in white and oriental females with small bone structure and females who experience a rapid loss of estrogen (due to a hysterectomy or age). (13)
If you are at risk for calcium deficiency, you should consider taking a calcium supplement. It's hard for many women to get the recommended daily allowance through diet since many women are lactose-intolerant. However, you should make it a point to increase your dietary intake as well by consuming more dairy products (milk, yogurt, etc.) and other calcium rich sources such as kale, tofu, and broccoli.