{"count":1,"index":{"built_at":"2026-07-28T05:19:21.944808+00:00","public_records":55311,"revision":"6729760c1d5f33a71ed753e8"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Lay opinion vs evidence: Vitamin D Genetik"},"results":[{"answer":"Lay opinion often overstates the role of genetics in vitamin D status. Many believe a DNA test can precisely determine individual vitamin D requirements or identify a 'risk gene.' The scientific evidence is more nuanced. Several genetic variants (e.g., in VDR, GC, CYP2R1, DHCR7) are associated with vitamin D metabolism. For instance, rs2282679 in the GC gene is linked to lower 25(OH)D levels (GWAS, moderate effect). However, these variants explain only a small fraction of the variance in vitamin D levels; environmental factors like sun exposure, diet, and skin type are far more influential. Clinical utility is limited: even with 'unfavorable' genotypes, adequate levels can usually be achieved through supplementation. A DNA test does not replace direct measurement of 25(OH)D. The evidence is solid for genetic associations (human-moderate) but insufficient for personalized dosing recommendations. Beware of marketing that promotes 'vitamin D gene tests' as a standalone tool – the practical benefit for individuals is marginal.","area":"gesundheit","canonical_id":"gesundheit:canonical-4d056795d15519edd35c3278","id":"public-1ab0733d5b86b3c543291027","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Lay opinion vs evidence: Vitamin D Genetik","score":37.93281897,"snippet":"Lay opinion often overstates the role of genetics in vitamin D status. Many believe a DNA test can precisely determine individual vitamin D requirements or identify a 'risk gene.' The scientific evidence is more nuanced. Several genetic variants (e.g., in VDR, GC, CYP2R1, DHCR7) are associated with vitamin D metabolism. For instance, rs2282679 in the GC gene is linked to lower 25(OH)D levels (GWAS, moderate effect). However, these variants explain only a small fraction of the variance in vitamin D levels; environmental factors like sun exposure, diet, and skin type are far more influential. Clinical utility is limited: even with 'unfavorable' genotypes, adequate levels can usually be achieve","sources":[],"title":"Lay opinion vs evidence: Vitamin D Genetik","url":"https://tikki.wiki/wissen/gesundheit/frage/public-1ab0733d5b86b3c543291027/lay-opinion-vs-evidence-vitamin-d-genetik/","verification":{"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"source_identity_verified":false,"tier":"existing_native_answer_privacy_screened_sources_pending"}}],"schema_version":"tikki.search-response.v1"}