Study Shows Positive Thinking Can Prolong Your Life

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MIAMI (CBSMiami) – Do you believe in the power of positivity? You may want to start if you don't already, because new research suggests having an optimistic outlook on life could have big health benefits.

Hayami Koga says she tries to stay positive.

"I think I'm more of a glass half full person. I try to look at the bright side of life," she said.

A new study shows an optimistic outlook on life may help you live longer.

"When comparing the most optimistic to the least optimistic women, people had a reduced risk of dying from cancer, infection, stroke, heart disease and lung disease," said Dr. Eric Kim of the Harvard T.H. Chan School of Public Health.

Dr. Kim and researchers from Harvard T.H. Chan School of Public Health looked at data on 70,000 women over eight years. The most optimistic women had a nearly 30 percent lower risk of dying.

"it seems to have the most effect on cardiovascular outcomes and the smallest effect on cancer outcomes," Dr. Kim said.

Researchers say taking steps to boost your optimism might also lead to healthy behaviors and better coping skills.

Dr. Kim says there are some easy ways to do that.

"One is called 'best possible self.' So you think about your different domains of life, whether it's your personal relationship, your spouse, your career, your friendships, and in each of those domains you think about the best possible outcome."

To increase optimism, you can also write down three things you are grateful for each night and make a list of the kind things you've done for others.

While this study only looked at women, researchers say the findings would also apply to men.