Calsium and Cholesterol: The Connection
If you think taking supplemental calcium is only good for bone health, think again. Calcium is a multifaceted nutrient. It happens to be the most abundant mineral in our bodies. Aside from its well-known role in promoting bone health, calcium is important for maximizing enzyme activity, facilitating nerve function, and helping to regulate heart rhythm and muscle contraction.
Low calcium intake has not only been associated with poor bone health, but may also contribute to poor blood pressure and even abnormal cell growth. The benefit of calcium now appears to extend to a completely new arena, which is cholesterol metabolism. In a recent study published in the American Journal of Medicine, 223 women were randomly assigned to take either 1 gram (1,000 mg) of calcium daily in the form of calcium citrate or an inactive placebo for one year1.
Investigators measured levels of LDL (bad) cholesterol and HDL (good) cholesterol at the onset of study, and then again periodically over the 12-month period. At the end of the trial, both HDL cholesterol and HDL-to-LDL ratios had increased more for women taking the calcium supplement compared to those taking placebo. On average, women taking calcium saw an increase in HDL cholesterol levels of about 7%. Authors indicated that this is another reason to encourage postmenopausal women to take calcium. Further studies are suggested to see if similar benefits are obtained with men, and whether or not calcium supplementation may affect cardiovascular health.