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Link Between Gut Microbial Health and Restless Leg Syndrome Discovered

by Colleen Fleiss on June 9, 2019 at 8:56 PM
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Link Between Gut Microbial Health and Restless Leg Syndrome Discovered

Among patients with restless legs syndrome (RLS) more prevalent of small intestine bacterial overgrowth (SIBO) was observed, revealed new study.

Results show that SIBO was found in all seven participants who have RLS. In contrast, the prevalence of SIBO in the general population is estimated to be no more than 15%.

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"We've observed extremely high rates of small intestinal bacterial overgrowth in the RLS group," said lead author Daniel Jin Blum, Ph.D., D.B.S.M., an adjunct clinical instructor at Stanford Center for Sleep Sciences and Medicine in Redwood City, California.

SIBO is a condition in which rare gut-residing bacteria are over-represented in the gut. RLS is a sensorimotor disorder characterized by a complaint of a strong, nearly irresistible urge to move the limbs that is often accompanied by other uncomfortable sensations. These symptoms begin or worsen during periods of rest or inactivity such as lying down or sitting, are partially or totally relieved by movement such as walking or stretching, and occur exclusively or predominantly in the evening or at night.
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Low iron in the brain is a key risk factor for RLS. According to the authors, this brain iron deficiency may be secondary to dietary iron deficiency or, potentially, gut inflammation.

Study participants completed questionnaires concerning sleep and SIBO symptoms and took home a fecal collection kit and a SIBO breath test kit. Fecal samples were examined by the University of Minnesota Genomics Center, and SIBO breath samples were evaluated by Aerodiagnostics for hydrogen and methane abnormalities.

Additional study participants continue to be recruited at the Stanford Sleep Center. Further analyses will examine fecal microbial composition, subtypes of RLS iron deficiency, and comparisons with insomnia.

Source: Eurekalert
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