{"count":4,"index":{"built_at":"2026-07-28T19:19:10.733897+00:00","public_records":70263,"revision":"4db6d26b3c449255bf596dd5"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: Transferrin in the context of Sport"},"results":[{"answer":"Transferrin is a key protein for iron transport in the blood and is often used in sports contexts as a marker of iron status. Low transferrin levels can indicate iron deficiency anemia, which impairs endurance performance. However, the evidence for using transferrin alone as a direct biomarker for performance optimization is weak. Interpretation is complicated by factors such as inflammation, training load, and individual variability. Moreover, the provided context lacks specific studies or guidelines that support the evidence-based use of transferrin in sports. Therefore, a conservative assessment is warranted: transferrin can be useful as part of a comprehensive iron status panel (including ferritin, hemoglobin, soluble transferrin receptor), but isolated measurements are insufficient. Athletes with abnormal values should seek medical advice.","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-b3b649da5f32e806ff57b17d","id":"public-953ad35dbc6527e293f6592a","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Transferrin in the context of Sport","research_origin_label":"","score":25.35767609,"snippet":"Transferrin is a key protein for iron transport in the blood and is often used in sports contexts as a marker of iron status. Low transferrin levels can indicate iron deficiency anemia, which impairs endurance performance. However, the evidence for using transferrin alone as a direct biomarker for performance optimization is weak. Interpretation is complicated by factors such as inflammation, training load, and individual variability. Moreover, the provided context lacks specific studies or guidelines that support the evidence-based use of transferrin in sports. Therefore, a conservative assessment is warranted: transferrin can be useful as part of a comprehensive iron status panel (includin","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: Transferrin in the context of Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-953ad35dbc6527e293f6592a/evidence-check-transferrin-in-the-context-of-sport/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"An iron/ferritin self-test can be relevant for athletes, as iron deficiency is common (especially in endurance sports) and can impair performance. However, the reliability of such home tests is limited: ferritin is an acute-phase reactant, meaning inflammation, infection, or liver issues can skew results, so a low value does not always indicate true deficiency. Moreover, standardized reference ranges for athletes are often lacking. A physician-supervised lab test (including CRP, transferrin saturation) is more reliable. Evidence for self-testing in sports is moderate – it may serve as a screening tool but not as a standalone diagnosis. Caveat: overinterpretation can lead to unnecessary supplementation or overlooking other causes.","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-8dc29e0b068ec09134d5c82f","id":"public-b573ad26ac77ffc72259d536","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Eisen-Ferritin Selbsttest in the context of Sport","research_origin_label":"","score":23.43323077,"snippet":"An iron/ferritin self-test can be relevant for athletes, as iron deficiency is common (especially in endurance sports) and can impair performance. However, the reliability of such home tests is limited: ferritin is an acute-phase reactant, meaning inflammation, infection, or liver issues can skew results, so a low value does not always indicate true deficiency. Moreover, standardized reference ranges for athletes are often lacking. A physician-supervised lab test (including CRP, transferrin saturation) is more reliable. Evidence for self-testing in sports is moderate – it may serve as a screening tool but not as a standalone diagnosis. Caveat: overinterpretation can lead to unnecessary suppl","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: Eisen-Ferritin Selbsttest in the context of Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-b573ad26ac77ffc72259d536/evidence-check-eisen-ferritin-selbsttest-in-the-context-of-sport/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"The provided context does not contain specific information on ferritin in sport. In general, ferritin is a key marker of body iron stores. In athletes, especially endurance athletes, low ferritin levels (e.g., <30 ng/mL) are common and may indicate iron deficiency anemia, which can impair performance. Studies show that iron supplementation in confirmed deficiency improves endurance capacity. However, ferritin is an acute-phase reactant; inflammation or infection can falsely elevate or lower values. A single ferritin test is insufficient for diagnosis – it should be combined with hemoglobin, transferrin saturation, and CRP. Consumer DNA tests do not measure ferritin directly; they only report genetic variants (e.g., HFE) that may increase risk of iron overload. The evidence for routine ferritin screening in athletes is moderate (observational studies, some RCTs). Caution: unsupervised iron supplementation can be harmful in cases of iron overload (e.g., hemochromatosis).","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-b1dc0ec6af0d2e3260f701a7","id":"public-1bf4064ff6886452e0ac08e1","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Ferritin in the context of Sport","research_origin_label":"","score":23.19473466,"snippet":"The provided context does not contain specific information on ferritin in sport. In general, ferritin is a key marker of body iron stores. In athletes, especially endurance athletes, low ferritin levels (e.g., <30 ng/mL) are common and may indicate iron deficiency anemia, which can impair performance. Studies show that iron supplementation in confirmed deficiency improves endurance capacity. However, ferritin is an acute-phase reactant; inflammation or infection can falsely elevate or lower values. A single ferritin test is insufficient for diagnosis – it should be combined with hemoglobin, transferrin saturation, and CRP. Consumer DNA tests do not measure ferritin directly; they only report","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: Ferritin in the context of Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-1bf4064ff6886452e0ac08e1/evidence-check-ferritin-in-the-context-of-sport/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"Ferritin is a key iron storage protein and a common marker for iron status in athletes. Low ferritin (e.g., <30 ng/mL) may indicate depleted iron stores even before anemia develops, potentially impairing endurance, recovery, and immune function. However, ferritin alone is not diagnostic: it can be falsely elevated by inflammation or lowered by overtraining. In sports, iron deficiency is multifactorial—due to increased demand, foot-strike hemolysis, sweating, or poor intake. Supplementation without confirmed deficiency is not recommended and may cause harm. Evidence for performance improvement from iron supplementation is strongest in athletes with confirmed iron deficiency (with or without anemia). For those with normal ferritin, no clear benefit exists. A full workup (CBC, transferrin saturation, CRP) is essential. Conclusion: Ferritin is a useful screening tool but must be interpreted in context. Athletes with symptoms should seek medical evaluation rather than self-supplement.","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-46c3ad952e61cef28d66c3f2","id":"public-df199e42d16ef1b99d98889a","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Ferritin Eisenmangel in the context of Sport","research_origin_label":"","score":22.66315534,"snippet":"Ferritin is a key iron storage protein and a common marker for iron status in athletes. Low ferritin (e.g., <30 ng/mL) may indicate depleted iron stores even before anemia develops, potentially impairing endurance, recovery, and immune function. However, ferritin alone is not diagnostic: it can be falsely elevated by inflammation or lowered by overtraining. In sports, iron deficiency is multifactorial—due to increased demand, foot-strike hemolysis, sweating, or poor intake. Supplementation without confirmed deficiency is not recommended and may cause harm. Evidence for performance improvement from iron supplementation is strongest in athletes with confirmed iron deficiency (with or without a","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: Ferritin Eisenmangel in the context of Sport","url":"https://tikki.wiki/wissen/gesundheit/frage/public-df199e42d16ef1b99d98889a/evidence-check-ferritin-eisenmangel-in-the-context-of-sport/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}}],"schema_version":"tikki.search-response.v1"}