{"count":2,"index":{"built_at":"2026-07-26T21:20:11.659029+00:00","public_records":55311,"revision":"cdf8ff7bb577794eceb61800"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: Selen in the context of Haut"},"results":[{"answer":"The question of selenium in the context of skin is nuanced. Selenium is an essential trace element that acts as a cofactor for antioxidant selenoproteins like glutathione peroxidases, which protect skin cells from oxidative stress caused by UV radiation. However, the evidence for a benefit of selenium supplementation in well-nourished individuals is weak. The large SELECT trial (RCT) found no benefit for general health, and excess selenium is toxic (upper tolerable intake 255 µg/day per EFSA). Some consumer DNA tests highlight GPX1 variants to suggest increased selenium needs, but the effect is small and not clinically actionable. For skin-specific outcomes (e.g., acne, skin cancer prevention), observational studies show mixed results: some suggest a protective role, others find no effect or even harm at high doses. Therefore, routine selenium supplementation for skin health is not supported by strong evidence. A better approach is to ensure adequate dietary intake (e.g., Brazil nuts, fish) and, if concerned, test blood selenium levels. The evidence rating is mixed: mechanistic plausibility exists, but human data are inconsistent and not robust enough for a general recommendation.","area":"gesundheit","canonical_id":"gesundheit:canonical-b528a36d5340f8a0b344f726","id":"public-1ad947d9e9f56b030a9eeed9","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of Haut","score":21.9336285,"snippet":"The question of selenium in the context of skin is nuanced. Selenium is an essential trace element that acts as a cofactor for antioxidant selenoproteins like glutathione peroxidases, which protect skin cells from oxidative stress caused by UV radiation. However, the evidence for a benefit of selenium supplementation in well-nourished individuals is weak. The large SELECT trial (RCT) found no benefit for general health, and excess selenium is toxic (upper tolerable intake 255 µg/day per EFSA). Some consumer DNA tests highlight GPX1 variants to suggest increased selenium needs, but the effect is small and not clinically actionable. For skin-specific outcomes (e.g., acne, skin cancer preventio","sources":[],"title":"Evidence check: Selen in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-1ad947d9e9f56b030a9eeed9/evidence-check-selen-in-the-context-of-haut/","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 question about a 'SLIM DNA Test' in the context of skin requires a cautious assessment. Genetic variants can influence metabolism (e.g., caffeine breakdown via CYP1A2, fat storage) and skin health (e.g., antioxidant gene GPX1, collagen). However, effect sizes are generally small, and weight loss success is primarily determined by calorie balance, exercise, and lifestyle. Evidence comes mostly from observational studies and GWAS, not from randomized controlled trials proving a clear benefit of genetically guided diets. Commercial tests often overstate their predictive power. In the skin context, genes like GPX1 (selenium metabolism) or ALDH2 (alcohol flush) may be relevant, but a direct 'skin-weight loss' link is not established. The test is not harmful, but expectations should be realistic: it provides hints, not diagnoses. The evidence is rated as human-moderate.","area":"gesundheit","canonical_id":"gesundheit:canonical-146d7a8ff2a0a77240324e90","id":"public-7fa2bb0885d47911ab15763d","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: WeightLoss | SLIM DNA-Test in the context of Haut","score":20.12483291,"snippet":"The question about a 'SLIM DNA Test' in the context of skin requires a cautious assessment. Genetic variants can influence metabolism (e.g., caffeine breakdown via CYP1A2, fat storage) and skin health (e.g., antioxidant gene GPX1, collagen). However, effect sizes are generally small, and weight loss success is primarily determined by calorie balance, exercise, and lifestyle. Evidence comes mostly from observational studies and GWAS, not from randomized controlled trials proving a clear benefit of genetically guided diets. Commercial tests often overstate their predictive power. In the skin context, genes like GPX1 (selenium metabolism) or ALDH2 (alcohol flush) may be relevant, but a direct '","sources":[],"title":"Evidence check: WeightLoss | SLIM DNA-Test in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-7fa2bb0885d47911ab15763d/evidence-check-weightloss-slim-dna-test-in-the-context-of-haut/","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"}