July 2025 in “Journal of the American Academy of Dermatology” Hair diameter diversity helps assess hair loss, but its standard measure varies by individual and ethnicity.
March 2026 in “Journal of the American Academy of Dermatology” Hair diameter diversity could improve androgenetic alopecia assessment and treatment planning.
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July 2014 in “British Journal of Dermatology” Hair thickness matters more than density for baldness in Japanese men over 25.
July 2023 in “International journal of trichology” The research found no clear link between the severity of male baldness and the scalp examination findings in Indonesian men.
December 2022 in “Frontiers in Microbiology” The scalp microbiome is more diverse and may be more important in hair loss than the gut microbiome.