Body Hair Density: What Your DNA Says
The amount of body hair you develop is influenced by androgen sensitivity and hair growth genes.
Key Genes Behind Body Hair Density
Scientists have identified specific genetic variants that influence body hair density. While most traits are shaped by a combination of multiple genes and environmental factors, the following genes play particularly important roles:
EDARARLGR4Variants in genes like EDAR, AR and LGR4 have been identified through genome-wide association studies (GWAS) and replicated across multiple research populations.
How Genetics Influence Body Hair Density
Your DNA contains instructions that shape body hair density through variations in protein structure, enzyme activity, and gene expression levels. Small differences in your genetic code, known as single nucleotide polymorphisms (SNPs), can alter how your body develops and functions in ways that affect this trait.
For body hair density, the interplay between genetic variants and environmental factors like diet, lifestyle, and exposure history determines your individual outcome. Some people carry variants that strongly push toward one expression of the trait, while others have a more balanced genetic profile where environment plays a larger role.
Genetic analysis provides insight into your predispositions, but does not guarantee a specific outcome. Traits are complex, and your unique combination of genetics and life experience shapes who you are.
How GenomeInsight Analyzes Body Hair Density
GenomeInsight examines your raw DNA data from services like 23andMe, AncestryDNA, or whole-genome sequencing (VCF files) to identify genetic variants linked to body hair density. All analysis runs entirely in your browser, so your genetic data never leaves your device.
For each relevant SNP, GenomeInsight reports your genotype, the trait-associated alleles, published research findings, and how your genetic profile compares to the general population. Results are presented with clear visualizations and easy-to-understand explanations.
Explore Related Traits
Male Pattern Baldness Risk
Androgenetic alopecia in men is driven by androgen receptor and other gene variants affecting hair follicle sensitivity.
Female Hair Thinning
Women can experience genetic hair thinning with different patterns and genes compared to male baldness.
Gray Hair Timing
When your hair starts to gray is partly genetic, with the IRF4 gene playing a key role in melanocyte function.
Skin Elasticity
Collagen and elastin gene variants affect how well your skin maintains firmness and resists wrinkles over time.
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