Ashton Kutcher said his nipples began to BLEED as he embarked on 17-mile marathon run

Ashton Kutcher appears on Jimmy Kimmel Live... after revealing secret recovery from vasculitis

Ashton Kutcher’s vasculitis explained - ‘people die within weeks,’ says doctor

Ashton Kutcher lost his sight, ability to walk, and hearing for close to a year due to rare autoimmune disease