MyBody-X angle on Vitamin D Männer

Vitamin D is relevant for men – for testosterone, bone health, and immune function. Some genetic tests analyze variants in genes like VDR, GC, and CYP2R1 that can influence vitamin D metabolism. The evidence comes from GWAS and mechanistic studies, not from randomized controlled trials proving benefit of personalized nutrition. The effects of individual SNPs are small; sun exposure, diet, and supplementation have a much larger impact. Consumer DNA tests can provide hints but cannot give precise dosage recommendations. A blood test for 25(OH)D is more reliable. The claim that a genetic test determines your 'optimal' vitamin D intake is overstated. Beware of marketing that turns weak associations into strong action plans. For men with specific risks (e.g., osteoporosis, low sun exposure), a medically supervised blood test and adjusted supplementation is more useful than a genetic test alone.