An increased fat mass storage with age, especially through accelerated weight gain in later childhood, may later explain an excess risk of obesity in adolescents and adults born preterm.21 Regarding individuals with non-preterm LBW, the excess risk of high blood pressure and diabetes, despite a significantly reduced risk of obesity that we observed in our study, advocates for complex insulin resistance mechanisms in these people. This evidence concerns the gene INS and obesity due to melanocortin 4 receptor deficiency.