Hemamy M, Pahlavani N, Amanollahi A, et al. - In this randomized, double-blind, placebo-controlled clinical trial, researchers sought to determine the impact of vitamin D and magnesium supplementation on mental health in children with attention-deficit/hyperactivity disorder (ADHD). The sample consisted of 66 children with ADHD. For 8 weeks, participants were randomly assigned to receive either vitamin D (50,000 IU/week) plus magnesium (6 mg/kg/day) supplements (n = 33) or placebos (n = 33). Co-supplementation of vitamin D (50,000 IU/week) and magnesium (6 mg/kg/day) for 8 weeks could improve the behavioral function and mental health of children with ADHD. More well-designed studies with larger sample size, however, are required.