Hugh Hefner had two years of serious back issues before his death.
The Playboy founder - who passed away from "natural causes" aged 91 - caught a mild bug recently but he was unable to fight it because his immune system was so weak, according to gossip website TMZ.
He had back problems in his 80s but these are said to have become a lot worse two years ago when he was struck down with an infection, and he was reportedly left bedridden towards the end of his life.
One of the businessman's final public appearances came in May 2016 when he announced Eugena Washington was 2016's Playmate of the Year.