vitamin d3 cortisol levels
vitamin d3 cortisol levels
Most clinical evidence shows that vitamin D3 supplementation does not raise cortisol; it tends to lower cortisol and improve the cortisol-to-cortisone balance by regulating the HPA axis. Vitamin D deficiency is more often linked to stress-hormone dysregulation than high-dose D3 causing cortisol spikes. This article summarizes the research, explains how D3 affects cortisol, and offers practical guidance on supplementation and safety.