Ahlqvist VH, et al. - Researchers performed a Swedish population-based cohort study to evaluate the correlation between differentiated forms of delivery with CS and the risk of obesity in young adulthood. Applying Swedish population registers, this population-based study consists of a cohort of 97,291 males born between 1982 and 1987 who were followed from birth until conscription (median 18 years of age) if they conscripted before 2006. Weight and height were measured and transformed into the World Health Organization categories of body mass index (BMI) at conscription. They obtained maternal and infant data from the Medical Birth Register. They analyzed the correlation by using multinomial and linear regressions. Moreover, they performed a series of sensitivity analyses, including fixed-effects regressions to account for confounders shared between full brothers. There was no evidence of a correlation between elective or nonelective CS and young adulthood obesity in young male conscripts when accounting for maternal and prenatal factors. No clinically relevant association was found between CS and the development of obesity. Future large-scale studies are needed to investigate the correlation between differentiated forms of CS and obesity in young adult offspring.