Causal Relationship Between Sleep Characteristics and Alopecia Areata and Other Non-Scarring Alopecia: A Two-Sample Bidirectional Mendelian Randomization Analysis

    November 2025 in “ Clinical Cosmetic and Investigational Dermatology ”
    Yanqi Li, Yuge Wang, Yankun Zhang, Wanchao Wang, AI Hong-mei
    TLDR Sleep patterns might be linked to hair loss, but more research is needed.
    This Mendelian Randomization (MR) study explores potential bidirectional causal relationships between sleep characteristics and alopecia, including alopecia areata and other non-scarring types. While the study suggests possible associations, the authors advise caution in interpreting the results due to the complexities of multiple testing. They recommend further research to understand the underlying mechanisms and to determine if these findings are applicable to broader populations.
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