All you need is a happy other half

Washington: The latest research suggests having a healthy relationship with an optimistic partner can greatly reduce a person's risk of developing age-related health conditions such as Alzheimer's, dementia and cognitive decline.

The Michigan State University study has suggested that partners with a positive outlook provide support and lead their companions with an example, thus adding to their longevity and sense of wellbeing "We spend a lot of time with our partners," said William Chopik, assistant professor of psychology and co-author of the study. "They might encourage us to exercise, eat healthier or remind us to take our medicine. When your partner is optimistic and healthy, it can translate to similar outcomes in your own life. You actually do experience a rosier future by living longer and staving off cognitive illnesses."

An optimistic partner may encourage eating a salad or work out together to develop healthier lifestyles. For example, if you quit smoking or start exercising, your partner is close to following suit within a few weeks and months.

"We found that when you look at the risk factors for what predicts things like Alzheimer's disease or dementia, a lot of them are things like living a healthy lifestyle," Chopik said.

The study and co-authored by MSU graduate student Jeewon Oh and Eric Kim, a research scientist in the Department of Social and Behavioral Sciences at the Harvard T.H. Chan School of Public Health, followed nearly 4,500 heterosexual couples from the Health and Retirement Study for up to eight years. The researchers found a potential link between being married to an optimistic person and preventing the onset of cognitive decline, thanks to a healthier environment at home.

"There's a sense where optimists lead by example, and their partners follow their lead," Chopik said. "While there's some research on people being jealous of their partner's good qualities or on having bad reactions to someone trying to control you, it is balanced with other research that shows being optimistic is associated with perceiving your relationship in a positive light." "There are studies that show people have the power to change their personalities, as long as they engage in things that make them change," Chopik said.