January 2026 in “Dermatologic Therapy” In this study, researchers found that among 7,761 patients with androgenetic alopecia, behaviors such as insufficient sleep, poor dietary habits, alcohol consumption, heavy physical labor, and specific hairstyling choices were associated with increased severity of hair loss.
November 2023 in “Biology” This study investigated 130 patients and found a significant inverse correlation between copper content and the copper/zinc ratio in hair samples and the extent of coronary artery disease, while zinc content alone showed no significant relationship with disease extent.
May 2022 in “Benha Journal of Applied Sciences” This study found that programmed death-ligand 1 (PD-L1) levels correlated with the severity of alopecia areata, suggesting its potential as an indicator and possible target for new treatments.
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April 2017 in “Journal of cosmetic dermatology” This study found that while vitamin D deficiency is not the sole cause of alopecia areata, it may worsen the disease, suggesting supplementation could help in pediatric cases.
July 2026 in “Frontiers in Medicine” This study describes a new treatment algorithm for alopecia areata that includes both disease severity and quality-of-life considerations, highlighting recent therapeutic advances and the need for future validation and access equity.