Vitamin D Deficiency Is a Warning Sign, Not Necessarily a Cause

A new analysis confirms that low vitamin D correlates with poor health outcomes, but researchers caution against assuming the vitamin itself is the culprit. The distinction matters for supplement makers, insurers, and policymakers betting billions on vitamin D interventions—many may be addressing a symptom rather than a root cause.

Originaltitel: Authors reply: Low vitamin D is a marker for poor health and increased risk for disease - but causality is still unclear in most cases