{"count":10,"index":{"built_at":"2026-07-28T00:04:42.953141+00:00","public_records":55311,"revision":"182f08f5b4b9b1c4ebc74fdf"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: Selen in the context of Stress"},"results":[{"answer":"Selenium is an essential trace element incorporated into selenoproteins (e.g., glutathione peroxidases) that combat oxidative stress and support thyroid function. Under stress, oxidative burden increases, and selenium might theoretically help. However, human evidence is moderate: some observational studies link low selenium to higher stress or anxiety, and supplementation may benefit those with deficiency, but effects are small and inconsistent. In well-nourished individuals, extra selenium shows no clear benefit. Toxicity risk exists at high intakes (>400 µg/day). Therefore, no general recommendation for selenium in stress; prioritize dietary sources (Brazil nuts, fish, eggs). Evidence: human-moderate.","area":"gesundheit","canonical_id":"gesundheit:canonical-a2cc24bf693c25e69f375f37","id":"public-78de70065bdd61d93ba3c0b6","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of Stress","score":19.75752737,"snippet":"Selenium is an essential trace element incorporated into selenoproteins (e.g., glutathione peroxidases) that combat oxidative stress and support thyroid function. Under stress, oxidative burden increases, and selenium might theoretically help. However, human evidence is moderate: some observational studies link low selenium to higher stress or anxiety, and supplementation may benefit those with deficiency, but effects are small and inconsistent. In well-nourished individuals, extra selenium shows no clear benefit. Toxicity risk exists at high intakes (>400 µg/day). Therefore, no general recommendation for selenium in stress; prioritize dietary sources (Brazil nuts, fish, eggs). Evidence: hum","sources":[],"title":"Evidence check: Selen in the context of Stress","url":"https://tikki.wiki/wissen/gesundheit/frage/public-78de70065bdd61d93ba3c0b6/evidence-check-selen-in-the-context-of-stress/","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 provided context does not contain specific studies or data on selenium in menopause. Selenium is an essential trace element important for thyroid function and antioxidant defense. Some observational studies suggest a possible link between low selenium status and increased oxidative stress during menopause, but randomized controlled trials demonstrating clear benefits for typical menopausal symptoms like hot flashes or bone health are lacking. The evidence is therefore weak to mechanistic. Supplementation without proven deficiency is not recommended, as excess selenium can be toxic. If selenium deficiency is suspected, a healthcare provider should be consulted.","area":"gesundheit","canonical_id":"gesundheit:canonical-7c188b2c3836d4b3367ff42d","id":"public-e98623f9f9ebb0a7399c8c06","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of menopause","score":19.25872357,"snippet":"The provided context does not contain specific studies or data on selenium in menopause. Selenium is an essential trace element important for thyroid function and antioxidant defense. Some observational studies suggest a possible link between low selenium status and increased oxidative stress during menopause, but randomized controlled trials demonstrating clear benefits for typical menopausal symptoms like hot flashes or bone health are lacking. The evidence is therefore weak to mechanistic. Supplementation without proven deficiency is not recommended, as excess selenium can be toxic. If selenium deficiency is suspected, a healthcare provider should be consulted.","sources":[],"title":"Evidence check: Selen in the context of menopause","url":"https://tikki.wiki/wissen/gesundheit/frage/public-e98623f9f9ebb0a7399c8c06/evidence-check-selen-in-the-context-of-menopause/","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":"Selenium is an essential trace element important for thyroid function and antioxidant defense. During menopause, oxidative stress increases, and some observational studies suggest selenium may support cognition or bone health. However, evidence for routine selenium supplementation in menopause is limited and mostly mechanistic. Before supplementing, a blood test (serum selenium) is recommended to avoid toxicity (>300 µg/day can cause selenosis). The recommended dietary allowance for women is 55 µg/day (US) or 60 µg/day (Germany). Genetic variants (e.g., in SELENOP or GPX1) may influence selenium metabolism but do not justify supplementation without lab confirmation. Overall, selenium is relevant but not a standalone solution for menopausal symptoms. Evidence: human-moderate/mechanistic.","area":"gesundheit","canonical_id":"gesundheit:canonical-f8fbbcafd4edd8d7dcb2b282","id":"public-0cabf949bfebdc07a4de71e0","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of Wechseljahre","score":19.19553246,"snippet":"Selenium is an essential trace element important for thyroid function and antioxidant defense. During menopause, oxidative stress increases, and some observational studies suggest selenium may support cognition or bone health. However, evidence for routine selenium supplementation in menopause is limited and mostly mechanistic. Before supplementing, a blood test (serum selenium) is recommended to avoid toxicity (>300 µg/day can cause selenosis). The recommended dietary allowance for women is 55 µg/day (US) or 60 µg/day (Germany). Genetic variants (e.g., in SELENOP or GPX1) may influence selenium metabolism but do not justify supplementation without lab confirmation. Overall, selenium is rele","sources":[],"title":"Evidence check: Selen in the context of Wechseljahre","url":"https://tikki.wiki/wissen/gesundheit/frage/public-0cabf949bfebdc07a4de71e0/evidence-check-selen-in-the-context-of-wechseljahre/","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 provided context does not contain direct studies or specific information on selenium in sports. Generally, selenium is an essential trace element that acts as an antioxidant via selenoproteins (e.g., glutathione peroxidases) and supports thyroid function. In athletes, an adequate selenium status may theoretically aid recovery and reduce oxidative stress. However, robust evidence from randomized controlled trials for performance enhancement through supplementation in already replete individuals is lacking. Selenium deficiency is rare in Central Europe, and excess intake can be toxic. Therefore, the evidence level is unclear, as the given materials offer no relevant studies or guidelines. Consumers should not rely on blanket supplementation but consider individual status testing.","area":"gesundheit","canonical_id":"gesundheit:canonical-ec4d92a25d4abba95e3c283f","id":"public-34c16a169d5082877043f4d9","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of Sport","score":19.19164886,"snippet":"The provided context does not contain direct studies or specific information on selenium in sports. Generally, selenium is an essential trace element that acts as an antioxidant via selenoproteins (e.g., glutathione peroxidases) and supports thyroid function. In athletes, an adequate selenium status may theoretically aid recovery and reduce oxidative stress. However, robust evidence from randomized controlled trials for performance enhancement through supplementation in already replete individuals is lacking. Selenium deficiency is rare in Central Europe, and excess intake can be toxic. Therefore, the evidence level is unclear, as the given materials offer no relevant studies or guidelines. ","sources":[],"title":"Evidence check: Selen in the context of Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-34c16a169d5082877043f4d9/evidence-check-selen-in-the-context-of-sport/","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":"Selenium is an essential trace element that, as a component of selenoproteins (e.g., glutathione peroxidases), plays a key role in antioxidant defense and thyroid function. In the context of longevity, selenium is often linked to reduced oxidative stress and slower cellular aging. However, the evidence is nuanced: observational studies show a U‑shaped relationship between selenium levels and mortality – both deficiency and excess (e.g., from uncontrolled supplementation) can be harmful. Randomized controlled trials on selenium alone for life extension do not provide clear evidence. The effect strongly depends on baseline status, genetic variants (e.g., in SELENOP), and dietary source. For healthy adults with adequate intake (e.g., from nuts, fish, eggs), additional supplementation likely offers no benefit and carries risks (selenosis). Therefore, individual status assessment (blood/serum) before supplementation is recommended. Overall, the evidence for selenium as a longevity supplement is moderate and predominantly mechanistic/observational.","area":"gesundheit","canonical_id":"gesundheit:canonical-699120672b8899cf70b1a1b8","id":"public-ee0f0cd59d4d3057b585ecd9","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of longevity","score":19.09002492,"snippet":"Selenium is an essential trace element that, as a component of selenoproteins (e.g., glutathione peroxidases), plays a key role in antioxidant defense and thyroid function. In the context of longevity, selenium is often linked to reduced oxidative stress and slower cellular aging. However, the evidence is nuanced: observational studies show a U‑shaped relationship between selenium levels and mortality – both deficiency and excess (e.g., from uncontrolled supplementation) can be harmful. Randomized controlled trials on selenium alone for life extension do not provide clear evidence. The effect strongly depends on baseline status, genetic variants (e.g., in SELENOP), and dietary source. For he","sources":[],"title":"Evidence check: Selen in the context of longevity","url":"https://tikki.wiki/wissen/gesundheit/frage/public-ee0f0cd59d4d3057b585ecd9/evidence-check-selen-in-the-context-of-longevity/","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 of selenium in the context of weight loss is not directly addressed in the provided sources. There is an entry on the GPX1 Pro198Leu variant, indicating that selenium can influence oxidative stress – a factor indirectly related to metabolism and body weight. However, the evidence for a direct weight-reducing effect of selenium is weak and mixed. Some observational studies suggest potential benefits in certain genotypes, while others show risks with excessive intake. Selenium is an essential trace element, but supplementation without prior blood level testing is not recommended. MyBody-X DNA tests can provide genetic insights but cannot replace medical advice. For weight management, calorie balance, exercise, and a balanced diet remain the key factors. Evidence grade: human-observational (mixed).","area":"gesundheit","canonical_id":"gesundheit:canonical-27af87be2614891884674dc0","id":"public-4fbb14219864138f04f02699","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of Abnehmen","score":19.08813147,"snippet":"The question of selenium in the context of weight loss is not directly addressed in the provided sources. There is an entry on the GPX1 Pro198Leu variant, indicating that selenium can influence oxidative stress – a factor indirectly related to metabolism and body weight. However, the evidence for a direct weight-reducing effect of selenium is weak and mixed. Some observational studies suggest potential benefits in certain genotypes, while others show risks with excessive intake. Selenium is an essential trace element, but supplementation without prior blood level testing is not recommended. MyBody-X DNA tests can provide genetic insights but cannot replace medical advice. For weight manageme","sources":[],"title":"Evidence check: Selen in the context of Abnehmen","url":"https://tikki.wiki/wissen/gesundheit/frage/public-4fbb14219864138f04f02699/evidence-check-selen-in-the-context-of-abnehmen/","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":"Selenium is an essential trace element that acts as a cofactor for selenoproteins such as glutathione peroxidases and thioredoxin reductases, which protect cells from oxidative stress – a key driver of skin aging caused by UV radiation and environmental pollutants. Mechanistic and animal studies suggest adequate selenium supports collagen synthesis and may preserve skin elasticity. However, human evidence is limited: observational studies link low selenium status to increased skin aging, but robust randomized controlled trials are lacking. Supplementation in well-nourished individuals shows no proven benefit, and excessive intake (>400 µg/day) can cause selenosis (toxicity). Consumer DNA or blood tests for selenium can indicate status but do not provide clinically actionable insights for skin aging. Evidence grade: mechanistic. Recommendation: obtain selenium from dietary sources (Brazil nuts, fish, eggs); supplement only if deficiency is confirmed under medical supervision.","area":"gesundheit","canonical_id":"gesundheit:canonical-1b56757eebfaaf3b9b763b3d","id":"public-fa42beb7431afd1ef6413094","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of skin aging","score":19.08700022,"snippet":"Selenium is an essential trace element that acts as a cofactor for selenoproteins such as glutathione peroxidases and thioredoxin reductases, which protect cells from oxidative stress – a key driver of skin aging caused by UV radiation and environmental pollutants. Mechanistic and animal studies suggest adequate selenium supports collagen synthesis and may preserve skin elasticity. However, human evidence is limited: observational studies link low selenium status to increased skin aging, but robust randomized controlled trials are lacking. Supplementation in well-nourished individuals shows no proven benefit, and excessive intake (>400 µg/day) can cause selenosis (toxicity). Consumer DNA or ","sources":[],"title":"Evidence check: Selen in the context of skin aging","url":"https://tikki.wiki/wissen/gesundheit/frage/public-fa42beb7431afd1ef6413094/evidence-check-selen-in-the-context-of-skin-aging/","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 role of selenium in sleep is not well-established by current evidence. Selenium is an essential trace mineral incorporated into selenoproteins (e.g., glutathione peroxidases) that combat oxidative stress and support thyroid hormone metabolism—both pathways that could theoretically influence sleep regulation. Some observational studies have reported associations between low selenium status and poorer sleep quality, possibly through impaired melatonin synthesis or increased oxidative damage. However, the evidence is largely mechanistic or based on small, cross-sectional studies. High-quality randomized controlled trials specifically testing selenium supplementation for sleep outcomes are lacking. Furthermore, selenium requirements depend on geographic soil content and diet; excessive intake from supplements can lead to selenosis (toxicity). Consumer tests (blood, hair) can indicate selenium status but are not validated for sleep assessment. Conclusion: While a plausible link exists, the evidence is insufficient to recommend selenium testing or supplementation for sleep improvement. Individuals with sleep concerns should focus on proven sleep hygiene and consult a healthcare provider.","area":"gesundheit","canonical_id":"gesundheit:canonical-c50fc982adb4472882e9e3cf","id":"public-071bf5b539a1cc8c9f0503cd","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of sleep","score":19.06163071,"snippet":"The role of selenium in sleep is not well-established by current evidence. Selenium is an essential trace mineral incorporated into selenoproteins (e.g., glutathione peroxidases) that combat oxidative stress and support thyroid hormone metabolism—both pathways that could theoretically influence sleep regulation. Some observational studies have reported associations between low selenium status and poorer sleep quality, possibly through impaired melatonin synthesis or increased oxidative damage. However, the evidence is largely mechanistic or based on small, cross-sectional studies. High-quality randomized controlled trials specifically testing selenium supplementation for sleep outcomes are l","sources":[],"title":"Evidence check: Selen in the context of sleep","url":"https://tikki.wiki/wissen/gesundheit/frage/public-071bf5b539a1cc8c9f0503cd/evidence-check-selen-in-the-context-of-sleep/","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 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":18.95475319,"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 link between selenium and sleep is not well-established. Selenium is an essential trace mineral that functions as a cofactor for antioxidant enzymes (e.g., glutathione peroxidases) and supports thyroid hormone metabolism—both pathways that could theoretically influence sleep regulation. Some observational studies have reported associations between low selenium levels and poorer sleep quality, but the evidence is limited to mechanistic plausibility and cross-sectional data. High-quality randomized controlled trials specifically testing selenium supplementation for sleep improvement are lacking. Moreover, selenium has a narrow therapeutic window; chronic excess intake can lead to selenosis (toxic symptoms). Therefore, supplementation without prior assessment of selenium status (e.g., via blood or hair analysis) is not advised. In the context of consumer health tests or supplements, selenium is sometimes marketed as a sleep aid, but this is not supported by robust human evidence. For sleep issues, evidence-based approaches include good sleep hygiene, stress management, and checking for common deficiencies (iron, vitamin D, magnesium). Evidence: mechanistic/observational. Sources: none specific in provided context.","area":"gesundheit","canonical_id":"gesundheit:canonical-d2d251b9b3bb63b437bef235","id":"public-40471334041829bda8bb8ec8","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Selen in the context of Schlaf","score":18.92861513,"snippet":"The link between selenium and sleep is not well-established. Selenium is an essential trace mineral that functions as a cofactor for antioxidant enzymes (e.g., glutathione peroxidases) and supports thyroid hormone metabolism—both pathways that could theoretically influence sleep regulation. Some observational studies have reported associations between low selenium levels and poorer sleep quality, but the evidence is limited to mechanistic plausibility and cross-sectional data. High-quality randomized controlled trials specifically testing selenium supplementation for sleep improvement are lacking. Moreover, selenium has a narrow therapeutic window; chronic excess intake can lead to selenosis","sources":[],"title":"Evidence check: Selen in the context of Schlaf","url":"https://tikki.wiki/wissen/gesundheit/frage/public-40471334041829bda8bb8ec8/evidence-check-selen-in-the-context-of-schlaf/","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"}