July 27, 2008

Science Daily/University of California, Los Angeles

CD4+ T lymphocytes, or simply CD4 T cells, are the "brains" of the immune system, coordinating its activity when the body comes under attack. They are also the cells that are attacked by HIV, the devastating virus that causes AIDS and has infected roughly 40 million people worldwide. The virus slowly eats away at CD4 T cells, weakening the immune system.

But the immune systems of HIV/AIDS patients face another enemy as well -- stress, which can accelerate CD4 T cell declines. Now, researchers at UCLA report that the practice of mindfulness meditation stopped the decline of CD4 T cells in HIV-positive patients suffering from stress, slowing the progression of the disease. The study was just released in the online edition of the journal Brain, Behavior, and Immunity.

Mindfulness meditation is the practice of bringing an open and receptive awareness of the present moment to experiences, avoiding thinking of the past or worrying about the future. It is thought to reduce stress and improve health outcomes in a variety of patient populations.

"This study provides the first indication that mindfulness meditation stress-management training can have a direct impact on slowing HIV disease progression," said lead study author David Creswell, a research scientist at the Cousins Center for Psychoneuroimmunology at UCLA. "The mindfulness program is a group-based and low-cost treatment, and if this initial finding is replicated in larger samples, it's possible that such training can be used as a powerful complementary treatment for HIV disease, alongside medications."

"Given the stress-reduction benefits of mindfulness meditation training, these findings indicate there can be health protective effects not just in people with HIV but in folks who suffer from daily stress," Creswell said.

http://www.sciencedaily.com/releases/2008/07/080724215644.htm