{"count":2,"index":{"built_at":"2026-07-27T21:07:39.313434+00:00","public_records":55311,"revision":"aea9bdf6cb0e11a47b427849"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: VDR in the context of Langlebigkeit"},"results":[{"answer":"The vitamin D receptor (VDR) is often discussed in the context of longevity because vitamin D influences many age-related processes (immune function, bone metabolism, cell division). The rs2228570 (FokI) variant in the VDR gene slightly alters receptor function. About 38% of Europeans carry the A allele. However, the effect on cellular vitamin D response is small; blood vitamin D levels are far more dependent on sun exposure and diet than on genetics. There is no robust evidence from randomized trials directly linking VDR variants to extended lifespan. Observational studies show associations between low vitamin D levels and increased mortality, but causality is not proven. Genotype-based supplementation is not currently recommended. Caution is warranted: high-dose vitamin D without medical need can be toxic. In summary, the evidence for VDR and longevity is weak to moderate – mainly from GWAS and mechanistic studies. Lifestyle factors (exercise, diet, sunlight) have a much greater impact on healthy lifespan.","area":"gesundheit","canonical_id":"gesundheit:canonical-29a99bfa500812af32f53161","id":"public-81de1f1cd929435c0570ad42","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: VDR in the context of Langlebigkeit","score":22.45603091,"snippet":"The vitamin D receptor (VDR) is often discussed in the context of longevity because vitamin D influences many age-related processes (immune function, bone metabolism, cell division). The rs2228570 (FokI) variant in the VDR gene slightly alters receptor function. About 38% of Europeans carry the A allele. However, the effect on cellular vitamin D response is small; blood vitamin D levels are far more dependent on sun exposure and diet than on genetics. There is no robust evidence from randomized trials directly linking VDR variants to extended lifespan. Observational studies show associations between low vitamin D levels and increased mortality, but causality is not proven. Genotype-based sup","sources":[],"title":"Evidence check: VDR in the context of Langlebigkeit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-81de1f1cd929435c0570ad42/evidence-check-vdr-in-the-context-of-langlebigkeit/","verification":{"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"source_identity_verified":false,"tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"The evidence for a vitamin D test in the context of longevity is weak. While vitamin D is essential for bone health, immune function, and possibly inflammation modulation, a direct causal link between vitamin D testing (either blood levels or genetic variants) and extended lifespan is not supported by robust human studies. The provided context only mentions the VDR FokI polymorphism (rs2228570), whose connection to insulin resistance is rated as 'unclear'. Large RCTs (e.g., VITAL) show no significant reduction in all-cause mortality from vitamin D supplementation in healthy adults. Genetic testing for VDR variants does not provide clinically actionable information for longevity. Therefore, the evidence grade is 'unclear'. Practical advice: If deficiency is suspected, measure serum 25(OH)D and supplement according to guidelines, not based on DNA tests. Excessive vitamin D intake can be toxic (hypercalcemia).","area":"gesundheit","canonical_id":"gesundheit:canonical-fc454e0afa43a0a00fe61957","id":"public-8e8418a354769c5692d7c966","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Vitamin D Test in the context of Langlebigkeit","score":21.67968677,"snippet":"The evidence for a vitamin D test in the context of longevity is weak. While vitamin D is essential for bone health, immune function, and possibly inflammation modulation, a direct causal link between vitamin D testing (either blood levels or genetic variants) and extended lifespan is not supported by robust human studies. The provided context only mentions the VDR FokI polymorphism (rs2228570), whose connection to insulin resistance is rated as 'unclear'. Large RCTs (e.g., VITAL) show no significant reduction in all-cause mortality from vitamin D supplementation in healthy adults. Genetic testing for VDR variants does not provide clinically actionable information for longevity. Therefore, t","sources":[],"title":"Evidence check: Vitamin D Test in the context of Langlebigkeit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-8e8418a354769c5692d7c966/evidence-check-vitamin-d-test-in-the-context-of-langlebigkeit/","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"}