Meredith Vieira and Richard Cohen talk about ‘Chasing Hope’ for MS

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Former TODAY anchor Meredith Vieira’s husband, Richard Cohen, was 25 when he was diagnosed with multiple sclerosis. They join TODAY to talk about Richard’s new book, “Chasing Hope: A Patient's Deep Dive into Stem Cells, Faith, and the Future.” “I think stem cell therapy is taking over medicine,” Cohen says.