Singer Yoo Yeol, celebrating his 40th anniversary since debut, made an emotional appearance on the November 13th episode of tvN's 'You Quiz on the Block'. During the broadcast, he revealed his grueling 7-year struggle with idiopathic pleuroparenchymal fibroelastosis (PPEE), a rare lung disease diagnosed in 2017. He shared the harrowing details of his health crisis, which included his weight dropping to 41kg, two failed lung transplant attempts, and reaching a critical state where he had to prepare a will and discuss end-of-life care. - Yoo Yeol battled a rare form of pulmonary fibrosis for 7 years, during which his weight plummeted to 41kg and his heart rate spiked to 190. - Throughout his severe illness, he faced life-threatening moments, including two cancelled lung transplant surgeries and the necessity of preparing a will for his family. | Singer Yoo Yeol, celebrating his 40th anniversary since debut, made an emotional appearance on the November 13th episode of tvN's 'You Quiz on the Block'. During the broadcast, he revealed his grueling 7-year struggle with idiopathic pleuroparenchymal fibroelastosis (PPEE), a rare lung disease diagnosed in 2017. He shared the harrowing details of his health crisis, which included his weight dropping to 41kg, two failed lung transplant attempts, and reaching a critical state where he had to prepare a will and discuss end-of-life care. - Yoo Yeol battled a rare form of pulmonary fibrosis for 7 years, during which his weight plummeted to 41kg and his heart rate spiked to 190. - Throughout his severe illness, he faced life-threatening moments, including two cancelled lung transplant surgeries and the necessity of preparing a will for his family.