Former U.S. President Jimmy Carter‘s health is deteriorating, as revealed by his grandson, Jason Carter. What Happened: Jason Carter provided an update on his grandfather’s health at a mental health forum named after his late grandmother, former first lady Rosalynn Carter, as reported by CNN on Tuesday. “He has been in hospice, as you know, for almost a year and a half now, and he really is, I think, coming to the end,” Jason Carter said. Jimmy Carter, who is now 99, became the oldest living president in history after the death of George H.W. Bush in 2018. Despite surviving metastatic brain ca…