Research suggests that vitamin A and its derivatives play a meaningful role in skin biology, particularly in regulating skin cell behavior, hair follicle function, and sebaceous gland activity, with genetic studies pointing to retinoid signaling pathways — including RXRA — as relevant to conditions like acne. However, the evidence base for skin health specifically is largely indirect: a 2024 Mendelian randomization study, which uses genetic variants to approximate a natural experiment, found no statistically significant causal link between higher circulating retinol levels and reduced risk of melanoma, squamous cell carcinoma, or basal cell carcinoma, suggesting that retinol's known role in skin cell regulation does not straightforwardly translate into protection against common skin cancers. A large 2025 genome-wide association study further supports retinoids as biologically relevant to acne susceptibility and severity, though this work identifies genetic architecture rather than testing vitamin A supplementation as an intervention. Overall, the studies available here are primarily genetic and observational in design, with no direct clinical trials focused on vitamin A for general skin health outcomes, and the findings are mixed enough that firm conclusions about supplementation for skin purposes are not well supported by this body of evidence.
Citations from PubMed and preprint sources. Match score (0-100) reflects automated search ranking, not clinical appraisal.
| Title | Type | Year | Direction | Match |
|---|---|---|---|---|
| Knowledge on Vitamin A and Household Consumption Frequency of Vitamin A-Rich ... | Other | 2025 | Neutral | 100 |
| No evidence that retinol is protective for skin cancer | Other | 2024 | Mixed | 90 |
| Genome-wide association meta-regression identifies stem cell lineage orchestr... | Other | 2025 | Neutral | 85 |
| The hagfish genome and the evolution of vertebrates | Other | 2023 | Neutral | 85 |
| Mechanistic Heterogeneity in Type 2 Diabetes and Hypertension Comorbidity Rev... | Other | 2025 | Neutral | 80 |
| Genetic influences on circulating retinol and its relationship to human health | Other | 2023 | Mixed | 75 |
| 13 cis retinoic acid improved the outcomes of COVID-19 patients. A randomized... | Other | 2022 | Neutral | 70 |
| Computational systematics of nutritional support of vaccination against viral... | Other | 2021 | Neutral | 65 |
| IL10RB as a key regulator of COVID-19 host susceptibility and severity | Other | 2021 | Neutral | 60 |
| Could nutrition modulate COVID-19 susceptibility and severity of disease? A s... | Other | 2020 | Neutral | 55 |
| Quantitative plasma proteomics of survivor and non-survivor COVID-19 patients... | Other | 2021 | Neutral | 50 |