Can Vitamin D 25-OH help with Wechseljahre?

Vitamin D (25-hydroxyvitamin D) is the storage form measured in blood and is often discussed in the context of menopause. The evidence is nuanced: for bone health, vitamin D is well-established – it enhances calcium absorption and, together with estrogen, slows bone loss. During menopause, estrogen decline increases osteoporosis risk, so maintaining a sufficient level (≥ 30 ng/ml) is preventive. Observational studies suggest links between low vitamin D and more severe hot flashes, mood disturbances, or sleep issues, but randomized controlled trials (RCTs) do not consistently confirm these effects. Thus, the evidence is moderate: strong for bone, weak for other menopausal symptoms. Caution: vitamin D is fat-soluble and can be toxic in excess (kidney stones, hypercalcemia). Testing 25-OH levels before supplementation is advisable. MyBody-X tests do not directly measure vitamin D; if you consider testing, use certified labs. In summary, vitamin D can help if you are deficient, but it is not a panacea for all menopausal complaints.