25 citations
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January 2022 in “Endocrine journal” This study suggests that hormonal changes may contribute to the persistent symptoms of long COVID, with specific patterns observed in serum hormone levels related to fatigue and sensory dysfunction.
19 citations
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February 2023 in “Public Health” This study found that more than one-quarter of patients experienced persistent symptoms up to 24 months after mild COVID-19, suggesting long-term effects even in less severe cases.
8 citations
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October 2022 in “Medicina-lithuania” This study observed that long COVID symptoms differed between patients infected in the Delta and Omicron periods, with those in the Omicron period experiencing milder illnesses but more fatigue, insomnia, and cough.
8 citations
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September 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that women, younger individuals, and those with a low body mass index were more likely to develop long COVID symptoms, and even mild COVID-19 cases often experienced long-term residual symptoms.
88 citations
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October 2020 in “Open Forum Infectious Diseases” This study discusses hair loss as a potential late-onset symptom of COVID-19 recovery, with androgenic alopecia and telogen effluvium suggested as possible causes, but provides no new clinical results.