{"count":5,"index":{"built_at":"2026-07-27T02:23:35.197875+00:00","public_records":55311,"revision":"02b54e1ca0b9d39ac3896db6"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: CLOCK in the context of fatigue"},"results":[{"answer":"The query concerns the CLOCK gene in the context of fatigue. The provided knowledge context contains no information about CLOCK. CLOCK is a core component of the circadian clock and is linked to sleep-wake cycles, fatigue, and metabolic regulation. Basic research and animal studies suggest that CLOCK variants can influence circadian rhythms. However, robust human studies demonstrating a direct causal effect on everyday fatigue are lacking. Consumer DNA tests that include CLOCK variants typically do not provide clinically actionable insights. The evidence level is best described as mechanistic or unclear. Lifestyle factors such as sleep hygiene, stress, diet, and physical activity have a much larger impact on fatigue. Without specific context data on CLOCK, no evidence-based conclusion can be drawn.","area":"gesundheit","canonical_id":"gesundheit:canonical-13606f494417abfce96b5f43","id":"public-a8bb9f4d7efa00a972e48985","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: CLOCK in the context of fatigue","score":22.33122508,"snippet":"The query concerns the CLOCK gene in the context of fatigue. The provided knowledge context contains no information about CLOCK. CLOCK is a core component of the circadian clock and is linked to sleep-wake cycles, fatigue, and metabolic regulation. Basic research and animal studies suggest that CLOCK variants can influence circadian rhythms. However, robust human studies demonstrating a direct causal effect on everyday fatigue are lacking. Consumer DNA tests that include CLOCK variants typically do not provide clinically actionable insights. The evidence level is best described as mechanistic or unclear. Lifestyle factors such as sleep hygiene, stress, diet, and physical activity have a much","sources":[],"title":"Evidence check: CLOCK in the context of fatigue","url":"https://tikki.wiki/wissen/gesundheit/frage/public-a8bb9f4d7efa00a972e48985/evidence-check-clock-in-the-context-of-fatigue/","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 CLOCK gene is a core component of the circadian clock. Certain polymorphisms (e.g., rs1801260) have been linked to diurnal preference, sleep duration, and fatigue in GWAS. However, effect sizes are small, and findings are often not replicated. Fatigue is highly multifactorial, involving sleep quality, stress, nutrition, and medical conditions. Therefore, a consumer DNA test for CLOCK variants cannot reliably predict or explain fatigue. Evidence is limited to genetic association studies (GWAS) with modest odds ratios. Clinical assessment and lifestyle interventions remain the primary approach. If you have persistent fatigue, consult a physician rather than relying on genetic results.","area":"gesundheit","canonical_id":"gesundheit:canonical-2f26b9f688af6dbf40659b37","id":"public-3fe7ff1f5f2bee82e49bcffe","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: CLOCK in the context of Müdigkeit","score":22.03973319,"snippet":"The CLOCK gene is a core component of the circadian clock. Certain polymorphisms (e.g., rs1801260) have been linked to diurnal preference, sleep duration, and fatigue in GWAS. However, effect sizes are small, and findings are often not replicated. Fatigue is highly multifactorial, involving sleep quality, stress, nutrition, and medical conditions. Therefore, a consumer DNA test for CLOCK variants cannot reliably predict or explain fatigue. Evidence is limited to genetic association studies (GWAS) with modest odds ratios. Clinical assessment and lifestyle interventions remain the primary approach. If you have persistent fatigue, consult a physician rather than relying on genetic results.","sources":[],"title":"Evidence check: CLOCK in the context of Müdigkeit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-3fe7ff1f5f2bee82e49bcffe/evidence-check-clock-in-the-context-of-muedigkeit/","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 DNA metabolism test can identify genetic variants that may influence energy metabolism – for example, in the MTHFR gene (folate activation, homocysteine) or CYP2D6 (drug metabolism). Fatigue is often linked anecdotally to MTHFR polymorphisms and elevated homocysteine, but the evidence is moderate: most carriers have normal homocysteine, and a causal role in fatigue is unproven. CLOCK variants (e.g., rs1801260) may slightly affect chronotype, but effect sizes are small. The MyBody-X WeightLoss DNA test analyzes a few metabolic SNPs but provides lifestyle inspiration rather than medical diagnosis. Fatigue is multifactorial – sleep, stress, nutrient status, thyroid, and mental health are major contributors. A genetic test does not replace clinical evaluation. Overall, evidence for actionable recommendations from such tests is weak to moderate; many products are marketing-driven. Before supplementing (e.g., methylfolate), measure homocysteine and other relevant biomarkers.","area":"gesundheit","canonical_id":"gesundheit:canonical-8f83c799a3748c1327149bf2","id":"public-cb7b4ea807ec252deac82c79","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: DNA Stoffwechseltest in the context of fatigue","score":20.33211556,"snippet":"A DNA metabolism test can identify genetic variants that may influence energy metabolism – for example, in the MTHFR gene (folate activation, homocysteine) or CYP2D6 (drug metabolism). Fatigue is often linked anecdotally to MTHFR polymorphisms and elevated homocysteine, but the evidence is moderate: most carriers have normal homocysteine, and a causal role in fatigue is unproven. CLOCK variants (e.g., rs1801260) may slightly affect chronotype, but effect sizes are small. The MyBody-X WeightLoss DNA test analyzes a few metabolic SNPs but provides lifestyle inspiration rather than medical diagnosis. Fatigue is multifactorial – sleep, stress, nutrient status, thyroid, and mental health are majo","sources":[],"title":"Evidence check: DNA Stoffwechseltest in the context of fatigue","url":"https://tikki.wiki/wissen/gesundheit/frage/public-cb7b4ea807ec252deac82c79/evidence-check-dna-stoffwechseltest-in-the-context-of-fatigue/","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 the Body-Balance Check and testosterone test for fatigue is understandable, as low testosterone can indeed be associated with fatigue. However, the provided knowledge context contains no specific information about these products or testosterone diagnostics. The context only includes general notes on DNA tests (CLOCK, PER), microbiome analysis, and a cardio risk test. Therefore, the answer must be conservative: testosterone tests (blood or saliva) can be useful when there is a clinical suspicion of hypogonadism, but fatigue has many causes – sleep deprivation, stress, thyroid function, iron deficiency, depression. A standalone self-test without medical supervision risks misinterpretation or unnecessary supplementation. The evidence for the benefit of testosterone measurement in non-specific fatigue is moderate, but not for asymptomatic screening. Marketing claims of 'Body-Balance' tests should be viewed critically. Recommendation: for persistent fatigue, seek medical evaluation rather than relying solely on a hormone test.","area":"gesundheit","canonical_id":"gesundheit:canonical-35e3b0a3f3ab02dab056b24f","id":"public-64ec858f7279e0066ef81986","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"What to watch with Body-Balance Check | Testosteron-Test and fatigue?","score":19.73801164,"snippet":"The question about the Body-Balance Check and testosterone test for fatigue is understandable, as low testosterone can indeed be associated with fatigue. However, the provided knowledge context contains no specific information about these products or testosterone diagnostics. The context only includes general notes on DNA tests (CLOCK, PER), microbiome analysis, and a cardio risk test. Therefore, the answer must be conservative: testosterone tests (blood or saliva) can be useful when there is a clinical suspicion of hypogonadism, but fatigue has many causes – sleep deprivation, stress, thyroid function, iron deficiency, depression. A standalone self-test without medical supervision risks mis","sources":[],"title":"What to watch with Body-Balance Check | Testosteron-Test and fatigue?","url":"https://tikki.wiki/wissen/gesundheit/frage/public-64ec858f7279e0066ef81986/what-to-watch-with-body-balance-check-testosteron-test-and-fatigue/","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 evaluating fatigue, common blood tests include: complete blood count (CBC) to check for anemia, ferritin (iron stores), vitamin B12, folate, vitamin D, thyroid panel (TSH), inflammatory markers (CRP, ESR), and liver/kidney function. Typical symptoms of fatigue are persistent tiredness, lack of energy, difficulty concentrating, increased need for sleep, and daytime sleepiness. Note: The genetic variants mentioned in the context (e.g., BMAL1, CLOCK) are not clinically established as standalone causes of fatigue. A DNA test does not replace medical workup. Evidence for blood tests in fatigue is strong (clinical practice), while genetic testing for fatigue lacks validated clinical utility.","area":"gesundheit","canonical_id":"gesundheit:canonical-ac0155f05283d999f587322f","id":"public-1e31d0d66c7ffcf7b7d7257d","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"welche blutwerte bei müdigkeit — what symptoms are typical?","score":19.06938845,"snippet":"When evaluating fatigue, common blood tests include: complete blood count (CBC) to check for anemia, ferritin (iron stores), vitamin B12, folate, vitamin D, thyroid panel (TSH), inflammatory markers (CRP, ESR), and liver/kidney function. Typical symptoms of fatigue are persistent tiredness, lack of energy, difficulty concentrating, increased need for sleep, and daytime sleepiness. Note: The genetic variants mentioned in the context (e.g., BMAL1, CLOCK) are not clinically established as standalone causes of fatigue. A DNA test does not replace medical workup. Evidence for blood tests in fatigue is strong (clinical practice), while genetic testing for fatigue lacks validated clinical utility.","sources":[],"title":"welche blutwerte bei müdigkeit — what symptoms are typical?","url":"https://tikki.wiki/wissen/gesundheit/frage/public-1e31d0d66c7ffcf7b7d7257d/welche-blutwerte-bei-muedigkeit-what-symptoms-are-typical/","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"}