Psychedelic drugs like LSD and so-called "magic mushrooms" might help treat depression and addiction. Researchers at the University of California say the substances that are banned as illegal drugs in the U.S. and other countries can rewire parts of the brain in a way that lasts longer than the drugs' effects. The scientists say this could make psychedelics the next generation of treatments for mental health disorders. They say psychedelics could be more effective and safer than existing options. The findings are published in the latest edition of the journal "Cell Reports."