PHILADELPHIA (CBS) - The more I read studies about music, the more I think we should all be listening to it much more than we do.

Researchers looked at 23 separate studies and found music can reduce stress in heart disease patients. It was found that taking that bit of knowledge and using it in a medical setting is helpful.

Listening to music may help heart patients reduce their stress and anxiety when undergoing treatments. Of the 23 studies, only two of the studies involved patients treated by trained music therapists. The rest involved patients who listened to prerecorded music on CDs.

Patients who listened to music reduced their heart rate and blood pressure. There was also some evidence that music could help boost mood as well.

Researchers at Temple Hospital in Philadelphia were behind most of the work but it shows that something simple and free can make a big difference.

Reported By Dr. Brian McDonough, KYW Newsradio Medical Editor