High birth weight (BW), 4000 g or larger, is an established risk factor for childhood leukemia. However, its association with central nervous system (CNS) tumor risk is yet unclear. The present study examined it, analyzing data obtained from a case-control study conducted among three states from the US. The association with childhood leukemia risk was also further examined. | The association between high birth weight and the risks of childhood CNS tumors and leukemia An analysis of a US case-control study in an epidemiological database