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Yoga May Reduce Fatigue, Inflammation in Breast Cancer Survivors
January 27, 2014

 

MONDAY, Jan. 27, 2014 (HealthDay News) -- Yoga may help breast cancer survivors beat the debilitating fatigue and sleep problems that often follow toxic treatments such as chemotherapy and radiation, a new study shows.

Fatigue can be a big challenge for cancer survivors.

"Even some years out from breast cancer treatment, anywhere from 30 to 40 percent of women report substantial levels of fatigue," said study author Janice Kiecolt-Glaser, a professor of psychology and psychiatry at Ohio State University in Columbus.

That may be due, in large part, to disrupted sleep. As many as 60 percent of cancer survivors say they have trouble sleeping, she noted, a rate that's two to three times higher than their cancer-free peers.

The end result is that many cancer survivors end up trying to drag themselves through their days.

"And it's a nasty downward spiral where increasing fatigue means less activity and less activity means increasing fatigue, so that over time less and less translates into greater frailty and decline," Kiecolt-Glaser said.

Kiecolt-Glaser, who studies the health effects of stress, wanted to see if it was possible to stop that cycle.

She and her colleagues, including her husband and research collaborator, Ronald Glaser, recruited 200 women aged 27 to 76 who were new to yoga and had finished treatment for breast cancer within the last three years. They had to be at least two months past their last treatment and otherwise healthy to participate.

The women were randomly assigned to one of two groups. The first group practiced the gentle, flowing poses of Hatha yoga for two 90-minute sessions each week for three months. The second group was placed on a waiting list.

Before and after the study, all the women answered detailed questions about their energy and vitality, mental health, the kind of support they felt they were getting from friends and family, their sleep, how active they were and even their diet. Researchers also performed blood tests to measure markers of inflammation.

The differences weren't immediately apparent. After three months of practice, women in the yoga group reported that they had more vitality and were sleeping better, compared to the group that was waiting to take the class.

And after their group sessions ended, most who were taking yoga gradually stopped practicing. Their physical activity went back to the level it was when they signed up for the study. Despite that, they continued to improve.

At the six-month mark, the women practicing yoga reported about 60 percent less fatigue than the women on the waiting list, and their measures of inflammation were 13 percent to 20 percent lower.

The longer they practiced yoga, the greater their improvements, Kiecolt-Glaser said.
The study was published Jan. 27 in the Journal of Clinical Oncology.

Previous studies have reported similar benefits.

"It's pretty consistent now across a number of different studies that yoga can be useful for improving symptoms like fatigue and sleep disturbances, which are extremely prevalent in breast cancer survivors and cancer survivors, in general," said Lorenzo Cohen, director of the integrative medicine program at M.D. Anderson Cancer Center in Houston.

Cohen said one question the study doesn't answer is whether any kind of exercise might have yielded these benefits, or if it was something specific about yoga that made the difference.

"Ideally, a next step is to really see, is yoga something more than exercise? Is yoga something more than the physical aspect? From Eastern philosophies, our best guess is that yes, it will be something more than just exercise because it's a mind-body practice, not just a body practice," he said.

Cohen advises people who are new to yoga to start slowly.

"It's important that you never push your body. Any physical exercise can result in harm if you push too hard," he said. "You can get equal benefits if you touch your toes or not. Yoga is about the process and not the product."

More information

Visit the U.S. National Center for Complementary and Alternative Medicine for more on the health benefits of yoga.
Copyright © 2014 HealthDay. All rights reserved.


SOURCES: Janice Kiecolt-Glaser, Ph.D., professor, psychology and psychiatry, The Ohio State University, Columbus, Ohio; Lorenzo Cohen, Ph.D., director, integrative medicine program, M.D. Anderson Cancer Center, Houston; Jan. 27, 2014, Journal of Clini...

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