" ... Prior to starting their training, the participants went through what was essentially a control group session -- blood samples were taken before and immediately after they listened to a 20-minute health education CD and again 15 minutes later. After completing the training course, a similar set of blood tests was taken before and after participants listened to a 20-minute CD used to elicit the relaxation response as part of daily practice. ... "
Not sure if that really counts by your standards, but thought you'd be interested in the info nonetheless.
http://www.sciencedaily.com/releases/2013/05/130501193204.ht...
" ... Prior to starting their training, the participants went through what was essentially a control group session -- blood samples were taken before and immediately after they listened to a 20-minute health education CD and again 15 minutes later. After completing the training course, a similar set of blood tests was taken before and after participants listened to a 20-minute CD used to elicit the relaxation response as part of daily practice. ... "
Not sure if that really counts by your standards, but thought you'd be interested in the info nonetheless.