Calcium supplementation, osteoporosis and cardiovascular disease.
Study Goal
The researchers aimed to evaluate the balance between the skeletal benefits and potential cardiovascular risks of calcium supplementation, particularly in osteoporosis prevention and treatment.
Results Summary
The study suggests calcium supplementation may have detrimental cardiovascular effects (e.g., myocardial infarction), though dietary calcium intake appears safe and beneficial for bone health. Pharmacological treatment remains necessary for significant fracture risk reduction, regardless of calcium and vitamin D supplementation.
Population
Patients with low calcium intake or at risk of osteoporosis/fractures.
Effective Dosage
800 to 1000 mg/d total calcium intake (including supplements if dietary intake is insufficient).
Duration
Not specified.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
adequate intakes of calcium and vitamin D | neutral | osteoporosis | - | - | are essential preventive strategies and essential parts | #1 |
calcium supplementation | decrease | cardiovascular health (i.e. myocardial infarction) | - | - | potential detrimental effect | #2 |
food sources of calcium | increase | bone density | - | - | produce similar benefits | #3 |
dietary calcium intake | no change | cardiovascular effects | - | - | does not seem to be related with adverse cardiovascular effects | #4 |
calcium intake from nutritional sources | neutral | - | - | - | needs to be enforced | #5 |
calcium supplements | increase | calcium intake | patients with low calcium intake | 800 to 1000 mg/d | are warranted aiming for a total calcium intake | #6 |
adequate vitamin D replacement | neutral | - | patients with low calcium intake | - | together with | #7 |
pharmacological treatment | decrease | fracture risk | patients at risk of fractures | - | is mandatory for significant reduction | #8 |
Adequate intakes of calcium and vitamin D are essential preventive strategies and essential parts of any therapeutic regimen for osteoporosis. However, calcium supplementation is not without controversy and benefits on skeletal health need to be balanced against potential risks on cardiovascular disease. The published data so far suggest a potential detrimental effect of calcium supplement on cardiovascular health (i.e. myocardial infarction) although further prospective studies are needed to clarify the gradient of risk. Since food sources of calcium produce similar benefits on bone density as supplements and dietary calcium intake does not seem to be related with adverse cardiovascular effects, calcium intake from nutritional sources needs to be enforced. In patients with low calcium intake supplements are warranted aiming for a total calcium intake of 800 to 1000 mg/d together with adequate vitamin D replacement. Nevertheless we should keep in mind that for significant reduction in fracture risk, pharmacological treatment is mandatory in patients at risk of fractures irrespective of calcium and vitamin D supplementation.