The statement was released in his recent instsagram post. See post below. 

No doubt this is a heart breaking news for fans of "The voice", future contestants and the NBC family. 

But we can always hold on to the fun memories of Blake. Don't forget also that Blake met his wife also a co judge on set of the voice. So I guess we just have to wait and see what next Blake has up his sleeves. 

And hopefully they'll find a perfect replacement or maybe they won't.