Su L, Chen C, Lu L, et al. - Researchers aimed at quantitatively examining the correlation between gestational weight gain (GWG) and risk of autism spectrum disorder (ASD) in offspring. Searching electronic databases, they identified nine studies, comprising 323,253 participants with 4,135 cases of ASD from five cohort studies and 1,462 cases and 3,265 controls from four case‐control studies. The accumulated evidence are suggestive of association of gaining weight outside the recommended GWG with a higher risk for ASD in offspring.