Medical experts say a diet rich in calcium is important to build strong bones and prevent osteoporosis, a bone-weakening disease.

They also estimate that 80 percent of adult women get less than half their daily requirement of calcium. A proper diet should include dairy products, leafy green vegetables such as spinach and calcium-rich foods such as sardines, salmon and oysters.Women after menopause need up to 1,500 milligrams of calcium daily, according to Marion Merrill Dow, a maker of dietary supplements.