Holding on to hope may not make patients happier as they deal with chronic illness or diseases, according to a new study by University of Michigan Health System researchers.

"Hope is an important part of happiness," said Peter A. Ubel, M.D., director of the U-M Center for Behavioral and Decision Sciences in Medicine and one of the authors of the happily hopeless study, "but there's a dark side of hope. Sometimes, if hope makes people put off getting on with their life, it can get in the way of happiness."

The results showed that people do not adapt well to situations if they are believed to be short-term. Ubel and his co-authors – both from U-M and Carnegie Mellon University, studied patients who had new colostomies: their colons were removed and they had to have bowel movements in a pouch that lies outside their body.

At the time they received their colostomy, some patients were told that the colostomy was reversible — that they would undergo a second operation to reconnect their bowels after several months. Others were told that the colostomy was permanent and that they would never have normal bowel function again. The second group – the one without hope, reported being happier over the next six months than those with reversible colostomies.

"We think they were happier because they got on with their lives. They realized the cards they were dealt, and recognized that they had no choice but to play with those cards," says Ubel, who is also a professor in the Department of Internal Medicine.