Scientists are getting close to proving what yogis have held to be true for centuries — yoga and meditation can ward off stress and disease.
John Denninger, a psychiatrist at Harvard Medical School, is leading a five-year study on how the ancient practices affect genes and brain activity in the chronically stressed. His latest work follows a study he and others published earlier this year showing how so-called mind-body techniques can switch on and off some geneslinked to stress and immune function.
While hundreds of studies have been conducted on the mental health benefits of yoga and meditation, they have tended to rely on blunt tools like participant questionnaires, as well as heart rate and blood pressure monitoring. Only recently have neuro-imaging and genomics technology used in Denninger’s latest studies allowed scientists to measure physiological changes in greater detail.
“There is a true biological effect,” said Denninger, director of research at the Benson-Henry Institutefor Mind Body Medicine at Massachusetts General Hospital, one of Harvard Medical School’s teaching hospitals. “The kinds of things that happen when you meditate do have effects throughout the body, not just in the brain.”