Miller SA, et al. - This study was carried out to assess the relationship between infant antibiotic exposure (aged < 24 months) and childhood obesity or overweight via retrieving articles from CINAHL, Cochrane CENTRAL, Embase and MEDLINE. The results of this systematic review and meta-analysis suggest a small connection between antibiotic exposure in infancy (<24 months) and childhood overweight or obesity. In boys vs girls and children exposed to multiple antibiotic courses or broad-spectrum drugs, the strongest associations were noted.