{"count":5,"index":{"built_at":"2026-07-28T03:44:24.469466+00:00","public_records":55311,"revision":"e5eb289cfa6e4c187a340476"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: tTG IgA in the context of sleep"},"results":[{"answer":"The biomarker tTG IgA (tissue transglutaminase antibodies) is primarily used for diagnosing and monitoring celiac disease. A direct, evidence-based link between tTG IgA levels and sleep quality or sleep disorders is not established in the current literature. While some studies report sleep disturbances in untreated celiac disease—potentially due to nocturnal gastrointestinal symptoms—there are no robust data correlating tTG IgA titers with objective sleep measures (e.g., polysomnography). The evidence is therefore weak to unclear. No direct causal mechanism connecting tTG IgA to sleep regulation is known. In a consumer health test context, it must be clearly stated that tTG IgA is not a sleep biomarker and should not be used to assess sleep issues. Clinically relevant sleep problems warrant medical evaluation, possibly including celiac disease workup if other symptoms are present.","area":"gesundheit","canonical_id":"gesundheit:canonical-6174c7c94a222132bcd6a8df","id":"public-9dae10126aa917caa671eb85","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: tTG IgA in the context of sleep","score":29.79757748,"snippet":"The biomarker tTG IgA (tissue transglutaminase antibodies) is primarily used for diagnosing and monitoring celiac disease. A direct, evidence-based link between tTG IgA levels and sleep quality or sleep disorders is not established in the current literature. While some studies report sleep disturbances in untreated celiac disease—potentially due to nocturnal gastrointestinal symptoms—there are no robust data correlating tTG IgA titers with objective sleep measures (e.g., polysomnography). The evidence is therefore weak to unclear. No direct causal mechanism connecting tTG IgA to sleep regulation is known. In a consumer health test context, it must be clearly stated that tTG IgA is not a slee","sources":[],"title":"Evidence check: tTG IgA in the context of sleep","url":"https://tikki.wiki/wissen/gesundheit/frage/public-9dae10126aa917caa671eb85/evidence-check-ttg-iga-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 query asks about tTG IgA (tissue transglutaminase IgA) in the context of sleep. The provided context contains no information on this biomarker or sleep. In general medicine, tTG IgA is the primary serological marker for celiac disease. There is some evidence that untreated celiac disease may impair sleep via inflammation, nutrient deficiencies (e.g., iron, vitamin D), or comorbid conditions (e.g., restless legs syndrome). However, the evidence is mostly mechanistic or from observational studies; robust randomized trials are lacking. A standalone tTG IgA test without confirmed celiac diagnosis is not informative for sleep issues. Caveat: If celiac disease is suspected, proper medical evaluation including duodenal biopsy is necessary; a gluten-free diet should not be started without a confirmed diagnosis.","area":"gesundheit","canonical_id":"gesundheit:canonical-db4626531c4a0159b5eca0e8","id":"public-41d704f78453a8557536a739","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: tTG IgA in the context of Schlaf","score":29.55162903,"snippet":"The query asks about tTG IgA (tissue transglutaminase IgA) in the context of sleep. The provided context contains no information on this biomarker or sleep. In general medicine, tTG IgA is the primary serological marker for celiac disease. There is some evidence that untreated celiac disease may impair sleep via inflammation, nutrient deficiencies (e.g., iron, vitamin D), or comorbid conditions (e.g., restless legs syndrome). However, the evidence is mostly mechanistic or from observational studies; robust randomized trials are lacking. A standalone tTG IgA test without confirmed celiac diagnosis is not informative for sleep issues. Caveat: If celiac disease is suspected, proper medical eval","sources":[],"title":"Evidence check: tTG IgA in the context of Schlaf","url":"https://tikki.wiki/wissen/gesundheit/frage/public-41d704f78453a8557536a739/evidence-check-ttg-iga-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"}},{"answer":"The provided context documents contain no information on celiac disease testing or its relation to sleep. Celiac disease is diagnosed via IgA antibodies (tTG-IgA) and duodenal biopsy, not via single SNP DNA tests. Some studies examine sleep quality in celiac patients, but there is no clear evidence for a predictive genetic test. The given sources only cover BMI-associated variants (rs6265) and pharmacogenetics (CYP). Without specific data, an evidence-based statement is not possible. Evidence is therefore rated as 'unclear'.","area":"gesundheit","canonical_id":"gesundheit:canonical-43c0bc8c0a0fbf13e740837c","id":"public-89775c8f591218215ef5a450","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Zöliakie Test in the context of Schlaf","score":27.37033939,"snippet":"The provided context documents contain no information on celiac disease testing or its relation to sleep. Celiac disease is diagnosed via IgA antibodies (tTG-IgA) and duodenal biopsy, not via single SNP DNA tests. Some studies examine sleep quality in celiac patients, but there is no clear evidence for a predictive genetic test. The given sources only cover BMI-associated variants (rs6265) and pharmacogenetics (CYP). Without specific data, an evidence-based statement is not possible. Evidence is therefore rated as 'unclear'.","sources":[],"title":"Evidence check: Zöliakie Test in the context of Schlaf","url":"https://tikki.wiki/wissen/gesundheit/frage/public-89775c8f591218215ef5a450/evidence-check-zoeliakie-test-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"}},{"answer":"A celiac test (e.g., IgA-tTG) is a medical diagnostic tool, not a lifestyle test. There is evidence that untreated celiac disease can impair sleep through malabsorption, inflammation, or associated conditions (e.g., iron deficiency, thyroid disorders) leading to nocturnal pain, restless legs syndrome, or fatigue. However, the direct causal link between celiac and sleep quality is based on moderate observational evidence. A positive celiac test alone does not predict sleep problems; other causes are common. According to the provided context, MyBody-X tests are not medical devices and cannot replace a doctor. For sleep issues, a full medical workup including sleep hygiene and organic causes is essential. The evidence for combining a celiac test with sleep assessment is therefore moderate: plausible mechanisms exist, but controlled studies are limited.","area":"gesundheit","canonical_id":"gesundheit:canonical-8645dab23bbb7d95d769bbf6","id":"public-8ddc6fdf4515ac92be95e855","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Zöliakie Test in the context of sleep","score":26.13879875,"snippet":"A celiac test (e.g., IgA-tTG) is a medical diagnostic tool, not a lifestyle test. There is evidence that untreated celiac disease can impair sleep through malabsorption, inflammation, or associated conditions (e.g., iron deficiency, thyroid disorders) leading to nocturnal pain, restless legs syndrome, or fatigue. However, the direct causal link between celiac and sleep quality is based on moderate observational evidence. A positive celiac test alone does not predict sleep problems; other causes are common. According to the provided context, MyBody-X tests are not medical devices and cannot replace a doctor. For sleep issues, a full medical workup including sleep hygiene and organic causes is","sources":[],"title":"Evidence check: Zöliakie Test in the context of sleep","url":"https://tikki.wiki/wissen/gesundheit/frage/public-8ddc6fdf4515ac92be95e855/evidence-check-zoeliakie-test-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":"When combining celiac disease testing with sleep concerns, the evidence from the provided context is indirect but clinically relevant. Celiac disease (an autoimmune reaction to gluten) can disrupt sleep through malabsorption of nutrients (iron, magnesium, B vitamins), chronic inflammation, and associated conditions like restless legs syndrome or sleep apnea. A positive celiac test (tTG-IgA, EMA, or HLA-DQ2/DQ8) warrants gastroenterological follow-up – a genetic test alone is not diagnostic. The context includes SIBO breath test limitations (false positives/negatives, lack of standardization), which could be confused with celiac but are distinct. The ZNF185 gene (with a questionable note 'Period Circadian Regulator 2') has no established role in sleep or celiac. Key watchpoints: sleep issues may be a symptom of undiagnosed celiac, but can persist even on a gluten-free diet. Check thyroid and iron status. Do not self-treat with supplements without medical guidance. Evidence: mixed – celiac testing is well-validated; the sleep connection is based on observational and mechanistic data.","area":"gesundheit","canonical_id":"gesundheit:canonical-a149130f54b84b984cf3e9e2","id":"public-dc73356cbc27c2a6f9d1875e","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"What to watch with Zöliakie Test and Schlaf?","score":24.32948537,"snippet":"When combining celiac disease testing with sleep concerns, the evidence from the provided context is indirect but clinically relevant. Celiac disease (an autoimmune reaction to gluten) can disrupt sleep through malabsorption of nutrients (iron, magnesium, B vitamins), chronic inflammation, and associated conditions like restless legs syndrome or sleep apnea. A positive celiac test (tTG-IgA, EMA, or HLA-DQ2/DQ8) warrants gastroenterological follow-up – a genetic test alone is not diagnostic. The context includes SIBO breath test limitations (false positives/negatives, lack of standardization), which could be confused with celiac but are distinct. The ZNF185 gene (with a questionable note 'Per","sources":[],"title":"What to watch with Zöliakie Test and Schlaf?","url":"https://tikki.wiki/wissen/gesundheit/frage/public-dc73356cbc27c2a6f9d1875e/what-to-watch-with-zoeliakie-test-and-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"}