July 2026 in “Journal of the American Academy of Dermatology” No direct link between matcha green tea and hair loss is proven.
May 2025 in “Australasian Journal of Dermatology” In this observational study, researchers reported a significant association between COVID-19 infection or vaccination and the development of new-onset lichen planus, suggesting these events, particularly infection, may act as triggers for the condition.
January 2020 in “Skinmed” Zinc levels are not significantly different in people with hair loss conditions like Androgenetic Alopecia and Alopecia Areata.
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March 2018 in “Cancer Medicine” This study found that alopecia areata patients had a slightly decreased overall cancer risk, with significantly lower risks for some cancers but higher risks for lymphoma, breast, kidney, and urinary bladder cancers.
July 2024 in “Journal of Investigative Dermatology” Alopecia areata patients are more likely to develop keloids, especially if they also have atopic dermatitis.