Dr. Jon Kabat-Zinn developed the Mindfulness Based Stress Reduction (MBSR) program at the University of Massachusetts Medical Center. Since its inception, MBSR has evolved into a common form of complementary medicine addressing a variety of health problems. The National Institutes of Health's National Center for Complementary and Alternative Medicine has provided a number of grants to research the efficacy of the MBSR program in promoting healing (see "Studies" below for information on this research). Completed studies have found that pain-related drug utilization was decreased, and activity levels and feelings of self esteem increased, for a majority of participants.