{"count":4,"index":{"built_at":"2026-07-26T21:30:51.877448+00:00","public_records":55311,"revision":"8761ff4902cb2f97725eb29f"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: TSH Schilddrüse in the context of longevity"},"results":[{"answer":"The question of TSH (thyroid-stimulating hormone) in the context of longevity is nuanced. Observational studies suggest that both low and high TSH levels are associated with increased mortality, particularly in older adults. A mildly elevated TSH (subclinical hypothyroidism) may even be protective in the very old, a phenomenon sometimes called the 'U-shaped curve'. However, evidence is largely observational; no RCT has proven that targeting a specific TSH range extends lifespan. TSH is influenced by age, sex, iodine status, medications, and circadian rhythm. A single TSH measurement without free T3, free T4, and thyroid antibodies provides limited insight. Direct-to-consumer thyroid tests often overclaim clinical utility. For longevity, maintaining thyroid function within a normal range is prudent, but aggressive optimization based on TSH alone is not supported by strong evidence. The evidence level is human-moderate (observational) with caveats about confounding and reverse causation.","area":"gesundheit","canonical_id":"gesundheit:canonical-4b765a4062729cb0ea1d03f6","id":"public-6e945ac8b13ad2dd500785c4","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: TSH Schilddrüse in the context of longevity","score":25.76780084,"snippet":"The question of TSH (thyroid-stimulating hormone) in the context of longevity is nuanced. Observational studies suggest that both low and high TSH levels are associated with increased mortality, particularly in older adults. A mildly elevated TSH (subclinical hypothyroidism) may even be protective in the very old, a phenomenon sometimes called the 'U-shaped curve'. However, evidence is largely observational; no RCT has proven that targeting a specific TSH range extends lifespan. TSH is influenced by age, sex, iodine status, medications, and circadian rhythm. A single TSH measurement without free T3, free T4, and thyroid antibodies provides limited insight. Direct-to-consumer thyroid tests of","sources":[],"title":"Evidence check: TSH Schilddrüse in the context of longevity","url":"https://tikki.wiki/wissen/gesundheit/frage/public-6e945ac8b13ad2dd500785c4/evidence-check-tsh-schilddruese-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 provided knowledge sources contain no specific information on TSH (thyroid-stimulating hormone) in the context of longevity. Generally, TSH is a key marker of thyroid function. An optimal TSH range (approx. 0.5–2.5 mU/L) is associated with better cardiovascular health and longevity, while both subclinical hyper- and hypothyroidism may be linked to increased mortality. The evidence is based on epidemiological studies, not randomized controlled trials. Direct causal effects on lifespan are not established. Consumer DNA tests cannot measure TSH levels; they only detect genetic variants (e.g., in PDE8B, TSHR) that have a small influence on TSH levels. These effects are minor and usually clinically irrelevant. A purely genetic assessment of thyroid function is insufficient; blood values and clinical symptoms are essential. The evidence for a direct longevity effect of TSH is therefore rated as 'unclear' or 'mixed'.","area":"gesundheit","canonical_id":"gesundheit:canonical-2e8649accbd3540daf99f3a1","id":"public-f999d2e6fb7662201e92614c","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: TSH Schilddrüse in the context of Langlebigkeit","score":25.39263024,"snippet":"The provided knowledge sources contain no specific information on TSH (thyroid-stimulating hormone) in the context of longevity. Generally, TSH is a key marker of thyroid function. An optimal TSH range (approx. 0.5–2.5 mU/L) is associated with better cardiovascular health and longevity, while both subclinical hyper- and hypothyroidism may be linked to increased mortality. The evidence is based on epidemiological studies, not randomized controlled trials. Direct causal effects on lifespan are not established. Consumer DNA tests cannot measure TSH levels; they only detect genetic variants (e.g., in PDE8B, TSHR) that have a small influence on TSH levels. These effects are minor and usually clin","sources":[],"title":"Evidence check: TSH Schilddrüse in the context of Langlebigkeit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-f999d2e6fb7662201e92614c/evidence-check-tsh-schilddruese-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 question about a link between TSH (thyroid-stimulating hormone) and blood sugar is scientifically relevant, but the provided knowledge contexts contain no direct information on TSH or the thyroid–blood sugar axis. The contexts cover iron metabolism (HFE, ferritin), lactase persistence (rs4988235), SIBO breath tests, and a DNA longevity test – none address TSH. In general, thyroid hormones influence glucose metabolism: hypothyroidism can reduce insulin sensitivity and raise fasting glucose, while hyperthyroidism can increase gluconeogenesis and insulin resistance. TSH itself is a sensitive but indirect marker; direct causal effects on blood sugar are not well established. Evidence for TSH as an independent predictor of glycemic disturbances is moderate and mostly based on observational studies. Without specific context data, the interpretative power is limited. A comprehensive assessment should include TSH, fT3, fT4, blood glucose, and insulin resistance markers (HOMA-IR). The evidence level is therefore rated as 'mixed'.","area":"gesundheit","canonical_id":"gesundheit:canonical-369ffd9c093bbf08beb6594a","id":"public-5a4a1590898d1d3f8b4ef1a6","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: TSH Schilddrüse in the context of blood sugar","score":24.56928842,"snippet":"The question about a link between TSH (thyroid-stimulating hormone) and blood sugar is scientifically relevant, but the provided knowledge contexts contain no direct information on TSH or the thyroid–blood sugar axis. The contexts cover iron metabolism (HFE, ferritin), lactase persistence (rs4988235), SIBO breath tests, and a DNA longevity test – none address TSH. In general, thyroid hormones influence glucose metabolism: hypothyroidism can reduce insulin sensitivity and raise fasting glucose, while hyperthyroidism can increase gluconeogenesis and insulin resistance. TSH itself is a sensitive but indirect marker; direct causal effects on blood sugar are not well established. Evidence for TSH","sources":[],"title":"Evidence check: TSH Schilddrüse in the context of blood sugar","url":"https://tikki.wiki/wissen/gesundheit/frage/public-5a4a1590898d1d3f8b4ef1a6/evidence-check-tsh-schilddruese-in-the-context-of-blood-sugar/","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":"What is a 'normal thyroid value'? It depends: TSH, fT3, and fT4 reference ranges vary by lab, age, and assay. Typically TSH 0.4–4.0 mU/L is considered normal, but some guidelines suggest narrower limits (0.5–2.5). A DNA test like MyBody-X cannot measure current thyroid hormone levels – it only checks genetic variants. Some variants (e.g., in DIO2, TSHR) may modestly affect thyroid hormone conversion or receptor sensitivity, but the evidence is weak and not clinically actionable. Consumer DNA tests are designed for nutrition, longevity, and wellness, not for diagnosing thyroid disorders. To assess thyroid function, a blood test ordered by a physician is essential. DNA results might offer background context, but they cannot replace standard clinical lab work. Be cautious of marketing claims that overstate the relevance of single SNPs for thyroid health.","area":"gesundheit","canonical_id":"gesundheit:canonical-a222b6d21b722a06303511c9","id":"public-1ee3c9855c5c3b8418c35ffb","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"was ist ein normaler schilddrüsenwert — can a DNA test help?","score":22.16416196,"snippet":"What is a 'normal thyroid value'? It depends: TSH, fT3, and fT4 reference ranges vary by lab, age, and assay. Typically TSH 0.4–4.0 mU/L is considered normal, but some guidelines suggest narrower limits (0.5–2.5). A DNA test like MyBody-X cannot measure current thyroid hormone levels – it only checks genetic variants. Some variants (e.g., in DIO2, TSHR) may modestly affect thyroid hormone conversion or receptor sensitivity, but the evidence is weak and not clinically actionable. Consumer DNA tests are designed for nutrition, longevity, and wellness, not for diagnosing thyroid disorders. To assess thyroid function, a blood test ordered by a physician is essential. DNA results might offer back","sources":[],"title":"was ist ein normaler schilddrüsenwert — can a DNA test help?","url":"https://tikki.wiki/wissen/gesundheit/frage/public-1ee3c9855c5c3b8418c35ffb/was-ist-ein-normaler-schilddruesenwert-can-a-dna-test-help/","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"}