January 2009 in “China Practical Medicine” This study found that several genes, including capping protein, palladin, VEGF, and HSPC-related clones, might cooperatively influence the aggregation, proliferation, and cycle control of dermal papilla cells, potentially affecting hair follicle behavior.
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January 2020 in “International Journal of Medical Sciences” This study found that several factors, including ponytail hairstyles and alcohol consumption, were associated with increased severity of female pattern hair loss in the surveyed Chinese women.
December 2025 in “Journal of the Korean Society of Cosmetology” This study observed that among adults in their 20s and 30s, deteriorating scalp and hair health increased hair loss stress, which in turn prompted more proactive scalp care behaviors, with hair condition being a stronger motivator than scalp condition.
January 2026 in “Dermatology Practical & Conceptual” In this study, dermatologists' TikTok content more frequently recommended standard treatments for hair and scalp disorders compared to influencers, who were more likely to suggest alternative options.
In this systematic review, researchers observed that Toxoplasma gondii infection is associated with alterations in testosterone levels, generally increasing in humans but showing mixed effects in animals, highlighting a complex relationship that warrants further investigation.