October 2023 in “Medical records-international medical journal” In this study, researchers sought to explore whether there is a correlation between melasma and ABO/Rh blood types, using data from 100 patients with melasma and 1000 healthy controls.
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March 2025 in “Portuguese Journal of Dermatology and Venereology” This study found a considerable prevalence of metabolic syndrome among women with melasma, with 29.3% meeting criteria for this condition, suggesting the importance of considering metabolic factors in managing melasma and preventing related complications.
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January 2017 in “Journal of Clinical Biochemistry and Nutrition” This study found that vitamin D was positively associated with serum ferritin levels in Korean women without metabolic syndrome, but this association was not observed in those with metabolic syndrome.
September 2025 in “Romanian Journal of Medical Practice” In this study of women with female pattern hair loss, iron deficiency was associated with the condition due to significantly lower serum ferritin and altered hematological indices compared to healthy controls, while no significant differences in serotonin levels or renal function were observed.
May 2026 in “Journal of Personalized Medicine” In this retrospective case–control study, researchers observed that patients with alopecia areata had a higher prevalence of iron deficiency anemia compared to controls, suggesting a potential comorbidity that may require assessment and management.