The vitamin D and calcium controversy: an update.
Study Goal
The researchers aimed to evaluate the effectiveness and safety of calcium and vitamin D supplementation for preventing falls and fractures, particularly in the elderly, and to assess potential adverse cardiovascular effects.
Results Summary
The study found that holistic calcium and vitamin D supplementation is unlikely to effectively prevent falls or fractures, and high-dose vitamin D may have adverse musculoskeletal effects. The cardiovascular safety of calcium supplements remains uncertain.
Population
Elderly individuals with inadequate calcium intake and vitamin D levels.
Effective Dosage
Not specified
Duration
Not specified
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
Calcium and vitamin D supplementation | decrease | falls and fracture | the elderly | - | widely recommended for prevention | #1 |
untargeted or 'holistic' supplementation | no change | falls and fracture | - | - | questioned the benefits | #2 |
untargeted or 'holistic' supplementation | increase | cardiovascular effects | - | - | raised the possibility of adverse effects | #3 |
holistic vitamin D supplementation with or without calcium | no change | falls or fracture | - | - | unlikely to be an effective primary prevention strategy | #4 |
vitamin D, daily or as a bolus | no change | cardiovascular events | - | - | does not reduce the risk | #5 |
vitamin D and calcium supplements | no change | holistic fall and fracture prevention | - | - | benefits remain uncertain | #6 |
high-dose vitamin D | increase | musculoskeletal effects | - | - | has adverse musculoskeletal effects | #7 |
calcium supplements with or without vitamin D | increase | cardiovascular effects | - | - | inconsistent findings for adverse effects | #8 |
PURPOSE OF REVIEW: Calcium and vitamin D supplementation is widely recommended for prevention of falls and fracture, particularly in the elderly where calcium intakes and vitamin D levels are often inadequate. A number of meta-analyses have questioned the benefits of untargeted or 'holistic' supplementation for falls and fracture, and raised the possibility of adverse cardiovascular effects. This review provides an update on these controversies. RECENT FINDINGS: Recent advances have largely centred around new trials of vitamin D and meta-analyses of published trials and observational studies. These articles have identified holistic vitamin D supplementation with or without calcium is unlikely to be an effective primary prevention strategy for falls or fracture. There has also been high-quality evidence that vitamin D, daily or as a bolus, does not reduce the risk of cardiovascular events. SUMMARY: The benefits of vitamin D and calcium supplements for holistic fall and fracture prevention remain uncertain. Recent evidence supports the concept that high-dose vitamin D has adverse musculoskeletal effects. Future studies should focus on moderate daily doses. Finally, there remain inconsistent findings for adverse cardiovascular effects of calcium supplements with or without vitamin D. This uncertainty should be taken into account when evaluating the risk/benefits of supplementation.