Work in the Garden

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    nesher

    Mon Jan 04 2010

    Mycobacterium vaccae, a harmless bacteria normally found in dirt, has been found to stimulate the immune system of mice and boost the production of serotonin, a mood-regulating brain chemical. The bacterium has already been successfully used in people as a vaccine against tuberculosis. It is also being tested as a treatment for cancer patients and in asthma sufferers, as a way to control the allergic reaction and help 'rebalance' the immune system. Now, studies on mice led by neuroscientist Christopher Lowry at the University of Bristol in England, suggests that the bacteria may have other applications as a treatment for mood disorders like depression. "These studies help us understand how the body communicates with the brain and why a healthy immune system is important for maintaining mental health. They also leave us wondering if we shouldn't all spend more time playing in the dirt," said Lowry. Interest in the unusual antidepressant properties of M.vaccae arose by accident foll... Read more