Risks and limits of Vitamin D Frauen

Vitamin D is crucial for bone health, immune function, and calcium metabolism, especially for women during menopause to prevent osteoporosis. However, the risks and limits of supplementation are often overlooked. Overdosing (hypervitaminosis D) causes hypercalcemia, leading to nausea, kidney stones, and long-term renal damage. The European Food Safety Authority (EFSA) sets the tolerable upper intake level (UL) for adults at 100 µg (4000 IU) per day, yet many supplements exceed this. Evidence for many claimed benefits (e.g., cancer prevention, mood improvement) is inconsistent; large RCTs often show no significant effect. Individual factors like genetics (VDR polymorphisms), sun exposure, and calcium intake modulate requirements. Routine screening for vitamin D levels is not recommended for all women, but is reasonable for risk groups (dark skin, low sun exposure, pregnancy). Limitations include poor test standardization and overinterpretation of lab values. MyBody-X tests can indicate genetic variants in vitamin D metabolism but do not replace medical advice. Conclusion: Supplement only when needed and respect upper limits; more is not better.