Selenium Hair Loss Meta-analysis: What the Evidence Says

Quick Answer

Selenium Hair Loss Meta-analysis has 2 source documents in the current Migaku evidence database. The strongest available sources in this first pass are mixed biomedical and public-health sources, so conclusions should be framed as evidence-aware guidance rather than medical advice.

Key Takeaways

• This page is generated only from sources stored in the Migaku evidence knowledge base.
• Current evidence mix: 1 research article, 1 preclinical study.
• Claims should be interpreted with the source type, study design, population, and publication date in mind.
• This article is educational and does not replace care from a qualified clinician.

Evidence Map

What The Sources Report

• Selenium (Se), a trace mineral the body needs only in tiny amounts to stay healthy, is found in many animal- and plant-based foods. [Persani Luca (2026); evidence level 4]
• A recent systematic review and meta-analysis found no difference in B12 levels between patients with subclinical hypothyroidism and those with hyperthyroidism, whereas hypothyroid patients had lower B12 levels than healthy adults. [Persani Luca (2026); evidence level 4]
• More than two billion people are at risk of micronutrient deficiencies, which often involve multiple, rather than single, nutrients. [Muacevic Alexander (2026); evidence level 4]
• They are widely used to help individuals meet their daily nutrient requirements, support overall health, and address increased nutritional needs associated with pregnancy, aging, and illness. [Muacevic Alexander (2026); evidence level 4]

How To Read This Evidence

Evidence level 1 generally reflects systematic reviews or meta-analyses. Level 2 includes randomized trials, guidelines, or public-health guidance. Level 3 usually reflects observational or narrative-review evidence. Level 4 is weaker or early-stage evidence. The level is a sorting aid, not a final quality grade.

Practical Interpretation

For selenium hair loss meta-analysis, the current source set is useful for orientation, but it is not yet broad enough for strong claims. Use cautious language and keep conclusions close to the cited sources.

Limits Of This First Pass

This is a small-batch MVP article. It uses the first ingested sources for this topic and should be expanded with more targeted searches, license review, and human editorial checks before being treated as a definitive review.

References

• Persani Luca (2026). Diet plays a supportive role in managing thyroid disorders – but a critical one!. DOI: 10.1530/ETJ-26-0185. PMCID: PMC13280619. PMID: 42237921. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13280619/
• Muacevic Alexander (2026). A to Z of Health: An Evidence-Based Narrative Review of Multivitamin-Multimineral and Nutraceutical Supplementation. DOI: 10.7759/cureus.108032. PMCID: PMC13222036. PMID: 42220661. License: CC BY 4.0. https://pmc.ncbi.nlm.nih.gov/articles/PMC13222036/

Safety Note

Health information can change, and individual risk depends on medical history, medications, pregnancy status, age, and diagnosis. Talk with a qualified clinician before changing treatment, supplement, or medication routines.