Like HowStuffWorks on Facebook!

Calcium: The "Miracle" Mineral


Stroke Prevention

A 1999 Harvard study reported that calcium supplementation protects against stroke in middle-aged women. In the ongoing Nurses' Health Study, 85,764 women, ages 35 to 59, reported that the mineral was tied to a 32% lower risk of stroke among those with the highest intake of the mineral. Women taking at least 400 mg of calcium supplements had a 12% lower risk of ischemic stroke (the type caused by plaque buildup in blood vessel walls). Dietary calcium, especially in dairy foods, reportedly reduced stroke risk, as did potassium.


More to Explore