Their label, GH Entertainment, said, "Hello, this is GH Entertainment. B.I.G's Minpyo will be taking a temporary break because of his health. We are sorry for worrying fans because of this sudden news. Recently, because of comeback preparations and frequent overseas schedules, Minpyo's health deteriorated severely. After conferring, we decided that his recovery was the top priority, and that he would be focusing on his recovery. Because of this, B.I.G's 5th single album '1, 2, 3' will be promoted with 4 members J-Hoon, Benji, Gunmin, and Heedo. GH Entertainment will keep supporting Minpyo so he can come back to fans healthily. We ask for your support, and ask for your unchanging interest and support in B.I.G. Thank you."
Hopefully he gets better soon!