Trump administration does about face on autism treatment

It had said back in September it would approve use of a drug called leucovorin -- synthetic vitamin B9 -- to treat the disorder. But on Tuesday the Food and Drug Administration backed off, citing insufficient evidence that it works for the condition. The initial announcement came from Health Secretary Robert F. Kennedy Jr, who for decades has spread debunked claims that vaccines cause autism. Kennedy touted leucovorin, usually used to alleviate chemotherapy side effects, as an "exciting therapy" that could help children with autism...