July 2026 in “Frontiers in Cellular and Infection Microbiology” Staphylococcus levels may indicate hair loss in men and could help develop new treatments.
August 2025 in “Frontiers in Microbiology” Microneedling, especially with halometasone, improves hair regrowth and gut health in alopecia areata.
April 2018 in “Journal of Investigative Dermatology” Sensitive scalp has higher pH, more redness, abnormal sebum, and altered bacterial makeup.
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February 2022 in “Genes” Women with PCOS have more Bifidobacterium in their gut compared to those without PCOS.
December 2025 in “Cosmetics” Gut bacteria differences could help diagnose and treat alopecia areata.