Colombian writer Gabriel Garcia Marquez is suffering from dementia and has been forced to stop writing, his brother told students at a lecture in Cartagena, reports the BBC. Jaime Garcia Marquez is the first to talk about his brother’s health woes publicly as the number of rumors surrounding his memory problems have increased. The Nobel Prize-winning author “has problems with memory,” his brother said. “Sometimes I cry because I feel like I’m losing him.” Jaime Garcia Marquez said his family had tried to keep the news out of the public eye out of a concern for his privacy. “The fact is there are lots of comments. Some are true but they’re always filled with morbid (details). Sometimes you get the sense they’d rather he were dead, as if his death were some great news,” he said, according to the Telegraph. Garcia Marquez’s best known work is his 1967 masterpiece One Hundred Years of Solitude, which starts with the story of a family struggling to take care of their senile grandfather. “It is a disease that runs in the family,” Jaime Garcia Marquez said.