{"count":3,"index":{"built_at":"2026-07-28T01:18:06.366617+00:00","public_records":55311,"revision":"bd89c630c42337b45ccaeeb3"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Myths vs facts: Selen and Sport"},"results":[{"answer":"Selen ist ein essenzielles Spurenelement, das als Bestandteil von Selenoproteinen (z. B. Glutathionperoxidase) eine Schlüsselrolle im antioxidativen Schutz und im Schilddrüsenstoffwechsel spielt. Mythos: Selenpräparate steigern die sportliche Leistung oder beschleunigen die Regeneration. Fakt: Bei ausreichender Versorgung (Referenzwert ~55 µg/Tag für Erwachsene) bringt eine zusätzliche Selensupplementierung keinen messbaren Leistungsvorteil. Einige Studien zeigen, dass ein Selenmangel die Immunfunktion und die antioxidative Kapazität beeinträchtigen kann, was bei intensivem Training relevant sein könnte. Allerdings ist die Evidenz für eine leistungssteigernde Wirkung bei Sportlern ohne Mangel schwach. Zudem ist Selen in höheren Dosen toxisch (Selenose). Die meisten kommerziellen Behauptungen beruhen auf Tierversuchen oder indirekten Mechanismen. Für Sportler gilt: Eine ausgewogene Ernährung deckt den Bedarf meist; eine Supplementierung ist nur bei nachgewiesenem Mangel sinnvoll. Caveat: Die Studienlage ist heterogen, und individuelle Unterschiede (z. B. Genetik, Trainingszustand) werden selten berücksichtigt.","area":"gesundheit","canonical_id":"gesundheit:canonical-de33d48dc77ba71c059a7dca","id":"public-499d5003a84539988c527abc","kind":"qa","language":"de","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Myths vs Facts: Selen und Sport","score":30.59607589,"snippet":"Selen ist ein essenzielles Spurenelement, das als Bestandteil von Selenoproteinen (z. B. Glutathionperoxidase) eine Schlüsselrolle im antioxidativen Schutz und im Schilddrüsenstoffwechsel spielt. Mythos: Selenpräparate steigern die sportliche Leistung oder beschleunigen die Regeneration. Fakt: Bei ausreichender Versorgung (Referenzwert ~55 µg/Tag für Erwachsene) bringt eine zusätzliche Selensupplementierung keinen messbaren Leistungsvorteil. Einige Studien zeigen, dass ein Selenmangel die Immunfunktion und die antioxidative Kapazität beeinträchtigen kann, was bei intensivem Training relevant sein könnte. Allerdings ist die Evidenz für eine leistungssteigernde Wirkung bei Sportlern ohne Mange","sources":[],"title":"Myths vs Facts: Selen und Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-499d5003a84539988c527abc/myths-vs-facts-selen-und-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 mineral, integral to selenoproteins like glutathione peroxidase, which protect cells from oxidative damage and support thyroid function. In sports, myths often claim that selenium supplements boost performance, reduce muscle soreness, or speed recovery. The evidence is moderate: while adequate selenium is necessary for antioxidant defense, supplementation beyond sufficiency does not enhance athletic performance in well-nourished individuals. Some studies in endurance athletes show modest improvements in oxidative stress markers, but results are inconsistent and effect sizes small. Selenium deficiency (e.g., in vegan diets or low-selenium regions) may impair recovery, but excess intake is toxic (selenosis), with a tolerable upper limit of ~400 µg/day. For most athletes, a balanced diet provides the recommended 55–70 µg/day. DNA tests for selenium-related genes (e.g., SEPP1) have limited predictive value and should not guide supplementation without blood biomarker confirmation. Evidence: human-moderate. Caveat: Do not self-prescribe high-dose selenium; consult a physician if deficiency is suspected.","area":"gesundheit","canonical_id":"gesundheit:canonical-7c52946e1e439f85583ebf53","id":"public-7c4870ff0c8236f35b144d9f","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Myths vs facts: Selen and Sport","score":30.42919273,"snippet":"Selenium is an essential trace mineral, integral to selenoproteins like glutathione peroxidase, which protect cells from oxidative damage and support thyroid function. In sports, myths often claim that selenium supplements boost performance, reduce muscle soreness, or speed recovery. The evidence is moderate: while adequate selenium is necessary for antioxidant defense, supplementation beyond sufficiency does not enhance athletic performance in well-nourished individuals. Some studies in endurance athletes show modest improvements in oxidative stress markers, but results are inconsistent and effect sizes small. Selenium deficiency (e.g., in vegan diets or low-selenium regions) may impair rec","sources":[],"title":"Myths vs facts: Selen and Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-7c4870ff0c8236f35b144d9f/myths-vs-facts-selen-and-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":"FT3 (free triiodothyronine) is the active thyroid hormone and plays a key role in energy metabolism, making it relevant for athletes. A common myth is that higher FT3 levels automatically improve performance. In reality, the relationship is complex: moderate endurance training can slightly lower FT3 as an adaptive response to increased energy turnover, while artificially raising FT3 via supplements or thyroid hormones is not recommended. Excess FT3 can cause arrhythmias, muscle wasting, and overtraining. Another myth is that FT3 deficiency can be corrected by exercise alone – manifest hypothyroidism requires medical treatment. Evidence for performance-enhancing effects of FT3 elevation in healthy athletes is weak, mostly based on mechanistic reasoning rather than controlled trials. Safety note: taking thyroid hormones without medical indication is dangerous and can lead to thyrotoxicosis. Evidence-based approach: focus on balanced nutrition, adequate iodine and selenium, and regular medical check-ups for thyroid issues.","area":"gesundheit","canonical_id":"gesundheit:canonical-e5e57df815c85e7f25fb898d","id":"public-a1f2fa873b60c3aeb480bee2","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Myths vs facts: FT3 and Sport","score":27.86589413,"snippet":"FT3 (free triiodothyronine) is the active thyroid hormone and plays a key role in energy metabolism, making it relevant for athletes. A common myth is that higher FT3 levels automatically improve performance. In reality, the relationship is complex: moderate endurance training can slightly lower FT3 as an adaptive response to increased energy turnover, while artificially raising FT3 via supplements or thyroid hormones is not recommended. Excess FT3 can cause arrhythmias, muscle wasting, and overtraining. Another myth is that FT3 deficiency can be corrected by exercise alone – manifest hypothyroidism requires medical treatment. Evidence for performance-enhancing effects of FT3 elevation in he","sources":[],"title":"Myths vs facts: FT3 and Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-a1f2fa873b60c3aeb480bee2/myths-vs-facts-ft3-and-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"}}],"schema_version":"tikki.search-response.v1"}