Mindfulness doesn’t lower blood pressure
TORONTO — A new study suggests that mindfulness therapy is not effective at lowering blood pressure.
Toronto researchers found that people who learned and applied the technique did not end up with lower blood pressure readings than people who did not use the approach.
Mindfulness-based stress reduction is a program that helps people learn about their relationship with their thoughts, emotions, behaviours and sensations. The technique, which involves deep-breathing techniques also used in yoga, has been shown to be effective in helping to control anxiety and cancer-related pain.
Senior author Dr. Sheldon Tobe says he was surprised mindfulness did not result in lower blood pressure because cognitive behavioural therapy has been shown to be useful in hypertension.
In fact, studies of cognitive behavioural therapy suggest it lowers blood pressure on average as well as a single hypertension drug at a starting dose would do.
“That’s a good drop in blood pressure. And that kind of blood pressure drop will lead to a reduction in heart attack and stroke over time,” said Tobe, a kidney specialist at Sunnybrook Health Sciences Centre, a University of Toronto teaching hospital.
The study, by researchers from the University of Toronto and York University, was published recently in the American Journal of Hypertension.
Tobe admitted the research team expected mindfulness-based stress reduction, or MBSR, would be effective.
“It seemed very promising for us,” said Tobe, whose work is funded by the Heart and Stroke Foundation of Ontario. “I was disappointed. I really thought it was going to work.”
In the trial, 101 adults in the early stages of a blood pressure problem were randomly assigned to either take the eight-week mindfulness program or not. In addition to attending weekly classes on MBSR, participants had to do homework — practise the technique out of class. They also had to keep a log of their efforts.