Joe Manganiello's secret seven-year health battle that nearly killed him

Joe Manganiello is opening up about the secret health battle that nearly "took his life" over seven years.

Manganiello sat down with "CBS Mornings" to discuss his health and his newly released memoir, "Bloodlines." 

During his appearance, the actor told Gayle King he was offered the role as the main villain, Deathstroke, in Ben Affleck's canceled "Batman" movie.

He wrote in his memoir that, at the same time as the job offer, he was "dying." Manganiello received the call to appear in the movie in 2016.