This blog post explores a recent study suggesting a potential link between calcium supplements and an increased risk of heart attack (MI).
Key Findings:
- A meta-analysis by Dr. Mark Bolland and colleagues found a connection between calcium supplements and a 30% rise in MI risk.
- The study involved over 11,000 participants and analyzed data from multiple randomized trials.
- The risk appeared independent of factors like age, sex, and supplement type.
Uncertainties and Ongoing Research:
- Experts like Dr. John Cleland question the mechanism behind the increased MI risk, particularly the short follow-up times in the trials.
- Gastrointestinal issues caused by the supplements might be misinterpreted as heart attack symptoms.
- The study’s focus on calcium alone excludes the potential benefits of vitamin D, often co-administered for bone health.
- Dr. John Schindler emphasizes the need for further research on gender differences and dietary calcium intake.
Recommendations and Conclusions:
- The study raises doubts about the routine use of calcium supplements, especially for those with high dietary calcium intake.
- Consulting a doctor is crucial to determine if calcium supplements are necessary and weigh the potential risks.
- Exploring calcium-rich foods like yogurt and sardines might be a safer alternative for some individuals.
- More research is needed to determine the optimal approach to preventing osteoporotic fractures.
Additional Notes:
- The Women’s Health Initiative, a large study on calcium and vitamin D for bone health, was excluded from this meta-analysis.
- The authors of the study and some of the experts quoted have no reported conflicts of interest. However, one author has financial ties to a dairy company (Fonterra).
This blog post highlights a recent development in calcium supplement research. It’s important to remember that more investigation is needed before definitive conclusions can be drawn. Consulting with a healthcare professional for personalized advice is crucial when considering calcium supplements or managing bone health.
