Calcium Supplementation and Coronary Artery Disease: Time to Act?

Aims This study aimed to evaluate the real effects of calcium supplementation on cardiovascular outcomes within a population-based cohort. Methods and results From a nationwide health screening database in Korea, a total of 11,297 patients with osteoporosis who had taken calcium supplementation with or without vitamin D for at least 90 days (total-calcium group; calcium supplementation only [CaO], n = 567; calcium supplementation in combination with vitamin D [CaD], n = 10,730) were matched at a 1:1 ratio to patients who had not taken calcium supplements (control group) by using propensity scores. The overall mean age was 59.9 ± 8.8 years and the percentage of women was 87.9% in our study population. Over a median follow-up of 54 months, the incidence rate of composite cardiovascular diseases (CVD) per 1000 person-years was not different between the groups: 9.73 in the total-calcium group and 8.97 in the control group (adjusted hazard ratio [HR]: 1.12; 95% confidence interval [CI]: 0.99 to 1.28; P = 0.08). However, calcium supplementation without vitamin D was associated with an increased risk of composite CVD (HR: 1.54; 95% CI: 1.17 to 2.04; P < 0.01), especially non-fatal myocardial infarction (HR:1.89; 95% CI: 1.23 to 2.91; P < 0.01), compared with no calcium supplementation. Conclusion Our population-based study supported that taking calcium supplementation with vitamin D together did not appear to be harmful to cardiovascular health, but reminding that calcium supplementation without vitamin D should be used carefully even in populations with low dietary calcium intake.

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Calcium Supplementation and Coronary Artery Disease: Time to Act?

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Cardiovascular risks associated with calcium supplementation in patients with osteoporosis: a nationwide cohort study

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