Transcendental meditation has been around since the 1950s, a simple practice that employs the recitation of a mantra to reduce stress and improve focus.
But there has never been a large-scale study on the health effects of the practice even though smaller studies have in the past linked it with everything from lower blood pressure to better school grades.
Now new research shows that African-Americans with heart disease who regularly practiced transcendental meditation were 48 percent less likely to have a heart attack, stroke or die from all causes compared with African-Americans who attended a health education class over more than five years.
The research, published in the American Heart Association's journal "Circulation: Cardiovascular Quality and Outcomes," found that those practicing meditation also lowered their blood pressure and reported less stress and anger. And the more regularly patients meditated, the greater their survival, according to researchers who conducted the study at the Medical College of Wisconsin in Milwaukee.
"We hypothesized that reducing stress by managing the mind-body connection would help improve rates of this epidemic disease," said Robert Schneider, M.D., lead researcher and director of the Institute for Natural Medicine and Prevention in Fairfield, Iowa. "It appears that transcendental meditation is a technique that turns on the body's own pharmacy -- to repair and maintain itself."
Schneider, who noted that the average age of those participating in the study was 59, said he recommends practicing trascendental meditation 20 minutes, twice a day.
"I also would recommend transcendental meditation to white patients or to any other race/ethnicity," Schneider said. "The reason is that the data from other studies indicates that transcendental meditation practice taps into neurophysiological mechanisms present in every human physiology. After all, stress effects everyone's mind and body."
Some six million people around the world have learned the transcendental meditation technique, said Schneider, including celebrities such as Clint Eastwood, Jerry Seinfeld and director David Lynch. Earlier this year, Oprah Winfrey said the practice was part of her overall attempt to "connect with that which is God."
Introduced to the world by Maharishi Mahesh Yogi in 1957, transcendental meditation is designed to bring the mind to a state in which there are no thoughts.
For the study, researchers randomly assigned 201 people to participate in a transcendental meditation stress-reducing program or a health education class on diet and exercise.
Those in the meditation program sat with eyes closed for about 20 minutes twice a day, practicing the technique and allowing their minds and bodies to rest deeply while remaining alert. Those in the health education group were advised, under the instruction of professional health educators, to spend at least 20 minutes a day at home practicing heart-healthy behaviors such as exercise, healthy meal preparation and nonspecific relaxation.
Researchers evaluated participants at the start of the study, at three months and every six months thereafter, for body mass index, diet, program adherence, blood pressure and cardiovascular hospitalizations. The trial required approximately 10 years to complete, with the longest follow-up for any one subject being nine years. In the end, researchers found:
- Blood pressure was reduced by 5 mm Hg and anger decreased significantly among transcendental meditation participants compared to controls.
Cardiovascular disease is the leading cause of death worldwide, Schneider notes. But death from heart disease is about 50 percent higher in African-American adults compared to whites in the U.S. To find a local certified transcendental meditation teacher, go here.