Baldness Risk Calculator
Assess your hair loss probability based on genetic and lifestyle factors
Personalized Recommendations
Key Factors Affecting Hair Loss
Genetics
Family history is the strongest predictor of male pattern baldness. The AR gene on the X chromosome (inherited from mother) plays a crucial role, while paternal genetics also contribute significantly.
Hormones
Dihydrotestosterone (DHT) is the primary hormone responsible for androgenetic alopecia. Higher sensitivity to DHT leads to hair follicle miniaturization and eventual hair loss.
Age
Hair loss probability increases with age. About 25% of men start losing hair before age 21, and by age 35, approximately 66% of men experience some degree of hair loss.
Lifestyle Factors
Stress, poor nutrition, smoking, and lack of sleep can accelerate hair loss. Chronic stress increases cortisol levels, which can disrupt the hair growth cycle.
Medical Conditions
Thyroid disorders, autoimmune diseases, and hormonal imbalances can cause hair loss. Certain medications and medical treatments may also contribute to hair thinning.
References
Heilmann-Heimbach, S., et al. (2017). Meta-analysis identifies novel risk loci and yields systematic insights into the biology of male-pattern baldness. Nature Communications, 8(1), 14694.
Birch, M. P., et al. (2001). Hair density, hair diameter and the prevalence of female pattern hair loss. British Journal of Dermatology, 144(2), 297-304.
Trueb, R. M. (2009). Molecular mechanisms of androgenetic alopecia. Experimental Gerontology, 44(12), 797-803.
Gatherwright, J., et al. (2013). The contribution of endogenous and exogenous factors to male alopecia: a study of identical twins. Plastic and Reconstructive Surgery, 131(5), 794e-801e.
Hadshiew, I. M., et al. (2004). Burden of hair loss: stress and the underestimated psychosocial impact of telogen effluvium and androgenetic alopecia. Journal of Investigative Dermatology, 123(3), 455-457.
Mosley, J. G., & Gibbs, A. C. (1996). Premature male pattern baldness and insulin resistance. Clinical Endocrinology, 45(3), 291-296.