Dietary calcium: adequacy of a vegetarian diet.

Obtaining sufficient amounts of absorbable dietary calcium to optimize bone density and to protect against bone resorption is a protective measure to lower the risk of osteoporosis. This goal is difficult in Western-style diets without the inclusion of dairy foods, fortified foods, or supplements. Lactovegetarians are able to meet recommended calcium intakes and do not have compromised bone mineral densities. Few other foods provide concentrated sources of absorbable calcium. Estimates of the absorbable calcium content of several plant foods are provided.