By Lisa Rapaport (Reuters Health) – Women who use in vitro fertilization (IVF) and other reproductive technologies may be more likely to have children with certain cancers or developmental delays than their peers who conceive the old-fashioned way, two new studies suggest. “At this point in time, we don’t believe the weight of the available evidence is strong enough to suggest that women should not proceed with ART,” Melissa Bondy, an oncology researcher at Baylor College of Medicine in Houston who wrote an editorial accompanying the cancer study, said by email. Instead, the researchers mined data from birth records for all children born in Norway between 1984 and 2011, pairing it with cancer registry data.