Dude had a lot of things wrong with him when he died -- morbid obesity, pussing ulcerated sores, paranoia ... Definitely not cute. There was a rumor that he had syphilis, but more modern theories suggest untreated Type 2 Diabetes. With his lifestyle, it probably could have been either -- or both.
I'll have to admit that part of my motivation for including Henry's death in this series is my morbid fascination with his burial. Four years earlier, a Franciscan Friar (Peto), condemned the king from the pulpit and compared him to King Ahab in the Bible. Peto said that dogs would lick up his blood at his death.