A much-needed overview of the available information now accumulating to indicate that assisted reproductive technologies are generally safe for both babies and mothers. However, the literature abounds with reports of a higher risk of obstetric and perinatal complications; regarding the long term outcomes for both women and children, the data are still scarce. The chapters summarized in this book review the current knowledge on long term safety of assisted reproduction and indicate the need for continued research to cover the lack of data in some specific patient groups and for recently developed treatments that only have a short period of follow-up.