{"count":8,"index":{"built_at":"2026-07-26T23:26:02.190722+00:00","public_records":55311,"revision":"dd062d35e28958eea147558b"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: MTHFR in the context of Haut"},"results":[{"answer":"The claim that MTHFR variants directly affect skin health is weakly supported by evidence. MTHFR is a key enzyme in folate and homocysteine metabolism. Certain polymorphisms (e.g., C677T) can reduce enzyme activity and raise homocysteine levels. Elevated homocysteine is linked to oxidative stress and inflammation, which could theoretically promote skin aging or conditions like psoriasis. However, robust clinical studies proving a direct causal effect on skin are lacking. Most data come from association studies with small effect sizes. A DNA test like MyBody-X can identify such variants, but the interpretation for skin health remains speculative. The evidence is primarily mechanistic, not clinically validated. For specific skin concerns, consulting a dermatologist is more reliable than relying solely on genetic testing. Results should be considered orienting, not diagnostic.","area":"gesundheit","canonical_id":"gesundheit:canonical-321379383a3ca6ef0c0c79a5","id":"public-2c91f7226b26db938ebcf914","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: MTHFR in the context of Haut","score":19.43304435,"snippet":"The claim that MTHFR variants directly affect skin health is weakly supported by evidence. MTHFR is a key enzyme in folate and homocysteine metabolism. Certain polymorphisms (e.g., C677T) can reduce enzyme activity and raise homocysteine levels. Elevated homocysteine is linked to oxidative stress and inflammation, which could theoretically promote skin aging or conditions like psoriasis. However, robust clinical studies proving a direct causal effect on skin are lacking. Most data come from association studies with small effect sizes. A DNA test like MyBody-X can identify such variants, but the interpretation for skin health remains speculative. The evidence is primarily mechanistic, not cli","sources":[],"title":"Evidence check: MTHFR in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-2c91f7226b26db938ebcf914/evidence-check-mthfr-in-the-context-of-haut/","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":"Folic acid (vitamin B9) is crucial for cell division and skin renewal. The provided context does not directly address skin, but includes general folate metabolism (MTHFR 677T, PMID 26497154). Observational studies suggest folic acid may support UV protection and wound healing, but the evidence is moderate and insufficient for specific skin recommendations. High doses (>1000 mcg/day) should be avoided, especially with MTHFR variants. For skin concerns, consult a doctor. Genetic testing for MTHFR provides only partial insight; environmental and dietary factors are more influential.","area":"gesundheit","canonical_id":"gesundheit:canonical-1e5ff0f40d4e32e192e41ffb","id":"public-315089aa669188a257d4f9d5","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Folsäure in the context of Haut","score":19.36779925,"snippet":"Folic acid (vitamin B9) is crucial for cell division and skin renewal. The provided context does not directly address skin, but includes general folate metabolism (MTHFR 677T, PMID 26497154). Observational studies suggest folic acid may support UV protection and wound healing, but the evidence is moderate and insufficient for specific skin recommendations. High doses (>1000 mcg/day) should be avoided, especially with MTHFR variants. For skin concerns, consult a doctor. Genetic testing for MTHFR provides only partial insight; environmental and dietary factors are more influential.","sources":[],"title":"Evidence check: Folsäure in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-315089aa669188a257d4f9d5/evidence-check-folsaeure-in-the-context-of-haut/","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":"Homocysteine is a sulfur-containing amino acid derivative produced during metabolism. Elevated levels are linked to oxidative stress and impaired collagen cross-linking, both of which can accelerate skin aging. MyBody-X DNA tests analyze MTHFR variants that influence homocysteine conversion. However, the effect on skin is indirect and not strong enough to predict skin conditions alone. Studies show that adequate folate intake can lower homocysteine (PMID 20421795), but whether that directly improves skin is not well established. The evidence is moderate: observational studies exist, but no randomized controlled trials confirm a causal link between MTHFR variants and skin health. Furthermore, blood tests measure homocysteine directly, while DNA tests only indicate genetic predisposition. Elevated homocysteine should be evaluated by a doctor before taking supplements like methylfolate. For skin care, proven measures such as sun protection, antioxidants, and adequate vitamin D are more important.","area":"gesundheit","canonical_id":"gesundheit:canonical-6deaa6520ac68a306b509714","id":"public-a83136ae261de10591710ba7","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Homocystein in the context of Haut","score":18.77627896,"snippet":"Homocysteine is a sulfur-containing amino acid derivative produced during metabolism. Elevated levels are linked to oxidative stress and impaired collagen cross-linking, both of which can accelerate skin aging. MyBody-X DNA tests analyze MTHFR variants that influence homocysteine conversion. However, the effect on skin is indirect and not strong enough to predict skin conditions alone. Studies show that adequate folate intake can lower homocysteine (PMID 20421795), but whether that directly improves skin is not well established. The evidence is moderate: observational studies exist, but no randomized controlled trials confirm a causal link between MTHFR variants and skin health. Furthermore,","sources":[],"title":"Evidence check: Homocystein in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-a83136ae261de10591710ba7/evidence-check-homocystein-in-the-context-of-haut/","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 does not contain direct evidence linking the CLOCK gene to skin health. CLOCK is a core circadian rhythm gene, and mechanistic research suggests the internal clock influences skin barrier function, collagen synthesis, and cell regeneration. However, the given sources (e.g., on MTHFR, ACE, LEPR, SIRT1) lack specific data on CLOCK and skin. Therefore, the evidence level is 'mechanistic' or 'unclear'. No direct clinical studies or genetic associations with skin aging or conditions are supported by the context. Consumer DNA tests that claim CLOCK variants affect skin are often based on weak or overhyped evidence. Without robust human studies, the utility of such analyses remains speculative. A healthy lifestyle including adequate sleep and UV protection is currently more important than single gene variants.","area":"gesundheit","canonical_id":"gesundheit:canonical-e0f695f21894e53ef896efd1","id":"public-5aa9bedb78d6d51eb7cb637c","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: CLOCK in the context of Haut","score":18.22377092,"snippet":"The provided context does not contain direct evidence linking the CLOCK gene to skin health. CLOCK is a core circadian rhythm gene, and mechanistic research suggests the internal clock influences skin barrier function, collagen synthesis, and cell regeneration. However, the given sources (e.g., on MTHFR, ACE, LEPR, SIRT1) lack specific data on CLOCK and skin. Therefore, the evidence level is 'mechanistic' or 'unclear'. No direct clinical studies or genetic associations with skin aging or conditions are supported by the context. Consumer DNA tests that claim CLOCK variants affect skin are often based on weak or overhyped evidence. Without robust human studies, the utility of such analyses rem","sources":[],"title":"Evidence check: CLOCK in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-5aa9bedb78d6d51eb7cb637c/evidence-check-clock-in-the-context-of-haut/","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 evidence for vitamin B12 in the context of skin health is limited and largely mechanistic. Severe B12 deficiency can cause dermatological signs such as hyperpigmentation, vitiligo, or angular stomatitis, but these are rare in well-nourished populations. In individuals without deficiency, B12 supplementation has not been shown to improve skin appearance or conditions. Some consumer DNA tests claim links between B12-related genetic variants (e.g., MTHFR, FUT2) and skin issues, but the effect sizes are small and the evidence is inconsistent. Therefore, the evidence level is 'mechanistic': plausible biological pathways exist, but robust clinical trials are lacking. Before supplementing, a blood test (holotranscobalamin or MMA) is recommended, as high-dose B12 may be unnecessary or even harmful in certain conditions (e.g., kidney disease). Consumer genetic tests can provide hints but not definitive answers.","area":"gesundheit","canonical_id":"gesundheit:canonical-4003443709e2dc89274fd768","id":"public-bdaccf193fface6cc97df609","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: B12 in the context of Haut","score":18.17206219,"snippet":"The evidence for vitamin B12 in the context of skin health is limited and largely mechanistic. Severe B12 deficiency can cause dermatological signs such as hyperpigmentation, vitiligo, or angular stomatitis, but these are rare in well-nourished populations. In individuals without deficiency, B12 supplementation has not been shown to improve skin appearance or conditions. Some consumer DNA tests claim links between B12-related genetic variants (e.g., MTHFR, FUT2) and skin issues, but the effect sizes are small and the evidence is inconsistent. Therefore, the evidence level is 'mechanistic': plausible biological pathways exist, but robust clinical trials are lacking. Before supplementing, a bl","sources":[],"title":"Evidence check: B12 in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-bdaccf193fface6cc97df609/evidence-check-b12-in-the-context-of-haut/","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 INFINITY DNA Test by MyBody-X is marketed as a comprehensive test including a 28-day plan and recipe book, specifically in the context of skin health. However, the provided context contains no direct evidence or studies on the efficacy of this test for skin issues. In general, the evidence for nutrigenetic tests for skin optimization is weak: it is mostly based on mechanistic links (e.g., collagen synthesis, antioxidant needs) or marketing claims. A DNA test can reveal genetic variants in genes like COL1A1, GSTT1, or MTHFR, but the impact of single SNPs on skin health is small and overshadowed by lifestyle, environment, and microbiome. The 28-day plan and recipe book are likely generic recommendations, not individually validated. Caveat: consumer tests are not diagnostic; for skin concerns, consult a dermatologist. Evidence rating: marketing/unclear.","area":"gesundheit","canonical_id":"gesundheit:canonical-0b311ce860ffe49752b76c7b","id":"public-c51ce978be1d81a8754a0094","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: INFINITY DNA-Test | inkl. 28-Tage-Plan & Rezeptbuch in the context of Haut","score":18.02812639,"snippet":"The INFINITY DNA Test by MyBody-X is marketed as a comprehensive test including a 28-day plan and recipe book, specifically in the context of skin health. However, the provided context contains no direct evidence or studies on the efficacy of this test for skin issues. In general, the evidence for nutrigenetic tests for skin optimization is weak: it is mostly based on mechanistic links (e.g., collagen synthesis, antioxidant needs) or marketing claims. A DNA test can reveal genetic variants in genes like COL1A1, GSTT1, or MTHFR, but the impact of single SNPs on skin health is small and overshadowed by lifestyle, environment, and microbiome. The 28-day plan and recipe book are likely generic r","sources":[],"title":"Evidence check: INFINITY DNA-Test | inkl. 28-Tage-Plan & Rezeptbuch in the context of Haut","url":"https://tikki.wiki/wissen/gesundheit/frage/public-c51ce978be1d81a8754a0094/evidence-check-infinity-dna-test-inkl-28-tage-plan-rezeptbuch-in-the-context-of-haut/","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 contexts do not directly address a link between a Fertility Check and skin. However, general research suggests plausible but indirect connections: skin condition (e.g., acne, elasticity, inflammation) can reflect hormonal imbalances, oxidative stress, and nutrient deficiencies that also affect fertility. For instance, vitamin D receptor (VDR) variants are associated with both skin health and reproduction. MTHFR polymorphisms impact methylation, which is relevant for egg quality and skin regeneration. Chronic low-grade inflammation (inflammaging), measured by biomarkers like CRP, is linked to both domains. Yet the evidence for direct, clinically actionable predictions from consumer DNA tests is weak. Most studies show small effect sizes that are easily overridden by lifestyle. Official guidelines do not recommend routine genetic testing for fertility or skin. Therefore, the relationship between a Fertility Check and skin is best described as unclear and largely mechanistic based on the available data. Consumers should be cautious of marketing claims suggesting direct benefits of such tests for both areas.","area":"gesundheit","canonical_id":"gesundheit:canonical-64b704c8cfe84f1377c94a7a","id":"public-4d6a128319e4f9bef1330a6b","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"How are Fertility Check | Fruchtbarkeits-Test and Haut related?","score":17.16674731,"snippet":"The provided knowledge contexts do not directly address a link between a Fertility Check and skin. However, general research suggests plausible but indirect connections: skin condition (e.g., acne, elasticity, inflammation) can reflect hormonal imbalances, oxidative stress, and nutrient deficiencies that also affect fertility. For instance, vitamin D receptor (VDR) variants are associated with both skin health and reproduction. MTHFR polymorphisms impact methylation, which is relevant for egg quality and skin regeneration. Chronic low-grade inflammation (inflammaging), measured by biomarkers like CRP, is linked to both domains. Yet the evidence for direct, clinically actionable predictions f","sources":[],"title":"How are Fertility Check | Fruchtbarkeits-Test and Haut related?","url":"https://tikki.wiki/wissen/gesundheit/frage/public-4d6a128319e4f9bef1330a6b/how-are-fertility-check-fruchtbarkeits-test-and-haut-related/","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":"Combining a nutrient check with skin concerns is reasonable, but the evidence is mixed. A nutrient deficiency test can reveal deficits in vitamin D, zinc, omega-3 fatty acids, or B vitamins, all of which can affect skin health. DNA variants like MTHFR C677T (rs1801133) or PPARA rs4253778 have small effects on nutrient metabolism but are not diagnostic for skin conditions. The gut-skin axis plays an important role: a disrupted microbiome can contribute to acne, eczema, or other skin issues. MyBody-X offers both nutrient and microbiome tests, but results should be seen as clues, not medical diagnoses. Marketing often overstates the direct link between single SNPs and skin outcomes. Practically, a nutrient check can help identify deficiencies that may be corrected with supplements, but persistent skin problems require medical evaluation. The evidence for personalized recommendations from DNA tests for skin improvement is weak to moderate. Be cautious of exaggerated claims and interpret results in the context of lifestyle, diet, and clinical examination.","area":"gesundheit","canonical_id":"gesundheit:canonical-ad53a6b70f0c507630f5ec85","id":"public-673fb43ad841330ec19dc420","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"What to watch with Nährstoffcheck and Haut?","score":16.53661474,"snippet":"Combining a nutrient check with skin concerns is reasonable, but the evidence is mixed. A nutrient deficiency test can reveal deficits in vitamin D, zinc, omega-3 fatty acids, or B vitamins, all of which can affect skin health. DNA variants like MTHFR C677T (rs1801133) or PPARA rs4253778 have small effects on nutrient metabolism but are not diagnostic for skin conditions. The gut-skin axis plays an important role: a disrupted microbiome can contribute to acne, eczema, or other skin issues. MyBody-X offers both nutrient and microbiome tests, but results should be seen as clues, not medical diagnoses. Marketing often overstates the direct link between single SNPs and skin outcomes. Practically","sources":[],"title":"What to watch with Nährstoffcheck and Haut?","url":"https://tikki.wiki/wissen/gesundheit/frage/public-673fb43ad841330ec19dc420/what-to-watch-with-naehrstoffcheck-and-haut/","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"}