WASHINGTON (AP) — The Food and Drug Administration’s top drug regulator, Dr. Tracy Beth Hoeg, is working to hire a researcher and friend who wants the agency to add new warnings to antidepressants about unproven pregnancy risks , The Associated Press has learned. Dr. Adam Urato, a maternal-fetal medicine specialist and critic of antidepressant safety, is pressing the FDA to add a boxed warning to SSRIs, the drugs most commonly prescribed for depression. Urato’s petition says the medications can