Your mother told you to drink your milk, (you didn’t).
Your doctor encouraged you to take calcium supplements, (you didn’t).
"Your body will lay down bone mass until your early 30s, so if you are in your teens or 20s, you have time to reverse the years of inadequate calcium intake and start building stronger bones,” says Nikki Tierney, a registered dietician in private practice in Quincy, Massachusetts. “If you've passed this age, all is not lost. You may have missed the opportunity to build bone mass, but it is never too late to prevent more bone loss.”
Women who are 19 to 50 years old need 1,000 mg of calcium per day;
those 51 or older need 1,200 mg per day.
“You absorb calcium best from food sources, so be sure to include these in your diet,” she says. “The easiest way to get your calcium is to get three servings of milk or yogurt each day. If you are looking to add in a supplement, get something with 500 to 1,000 mg, such as calcium chews.” In addition to dairy, you can get your calcium from the following sources: ½ cup firm tofu (204 mg), 3 oz canned salmon (181 mg), 1 cup pinto beans (103 mg) or 1 cup cooked kale (94 mg).