Tsai TY, et al. - Experts sought to perform a systematic review and meta-analysis of studies evaluating the serum homocysteine, folate, and vitamin B₁₂ levels in vitiligo patients. Higher serum homocysteine levels and lower vitamin B₁₂ levels were seen in the patients with vitiligo vs individuals without vitiligo. Findings did not suggest a significant difference in serum folate levels between the two groups (SMD –0.240; 95% CI –0.592–0.111; I2: 85.5%).