Joe Biden's announcement that he has been diagnosed with prostate cancer has revived questions about what health issues the former US president was dealing with while he was in the White House. In a statement on Sunday,

Former U.S. President Joe Biden's cancer announcement revived questions on Monday about the extent of his health issues during his tenure, with President Donald Trump saying Biden should have been more transparent with the public.

Before his cancer diagnosis, Biden had been taking the train from Delaware to Washington, meeting with his post-presidential staff, allies and former Cabinet secretaries, accordin