Ashton Kutcher lost vision, hearing and ability to walk after rare autoimmune diagnosis - Yahoo Entertainment

"You don't really appreciate it, until it's gone," Kutcher explained to Bear Grylls.

Ashton Kutcher is "lucky to be alive" after dealing with a rare autoimmune disorder two years ago that left him unable to hear, see or walk. The That '70s Show alum opens up about his health battle d… [+1586 chars]

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