5 citations
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May 2019 in “Anais Brasileiros de Dermatologia” This article discusses the connection between prenatal androgen exposure, marked by the second-to-fourth digit ratio, and seborrheic dermatitis, but reports no new experimental findings.
March 2018 in “Benha Journal of Applied Sciences” This study found that while prolactin and DHEA-S levels were higher in women with hirsutism compared to controls, there was no significant correlation between second to fourth digit ratio and hormonal profiles.
December 2022 in “The Aging Male” This study found that in male patients, a lower right-handed 2D:4D digit ratio combined with older age correlated with increased severity risk of androgenetic alopecia.
3 citations
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February 2019 in “Disease Markers” This study reports that a lower 2D:4D finger length ratio is significantly associated with higher disease activity and reduced spinal mobility in females with ankylosing spondylitis, but not in males.
October 2023 in “Dermatology practical & conceptual” In this review, the authors evaluated the potential of using the second to fourth digit ratio (2D:4D) as a predictor for androgenetic alopecia, suggesting future research directions but not reporting definitive results.
