@foxnews: Former President Joe Biden says his battle with cancer is forcing him to scale back plans for a promotional tour of his upcoming presidential memoir. "Some days are better than others. It hasn't stopped me. But sometimes it slows me down," the 83-year-old writes, acknowledging he won't be able to make as many appearances as he had hoped. Biden was diagnosed with an aggressive form of prostate cancer that spread to his bones in May 2025. He says his doctors remain encouraged by his response to treatment. His new book also revisits one of the most consequential decisions of his presidency. See what he plans to address at the link.