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Restless Legs Syndrome Center

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Restless Legs Syndrome Tied to Earlier Death Risk

Older men with condition have 39 percent increase in mortality, study suggests

WebMD News from HealthDay

By Serena Gordon

HealthDay Reporter

WEDNESDAY, June 12 (HealthDay News) -- Men with restless legs syndrome now have another health concern: New research has just linked the condition to an increased risk of dying early.

In a study of nearly 20,000 men, Harvard researchers found that men with restless legs syndrome had a 39 percent higher risk of an early death than did men without the condition.

"This study suggests that individuals with restless legs syndrome are more likely to die early than other people," said study author Dr. Xiang Gao, an assistant professor at Harvard Medical School and an associate epidemiologist at Brigham and Women's Hospital in Boston. "This association was independent of other known risk factors."

"[However], this is an observational study," Gao said of the findings, which were published online June 12 in the journal Neurology. "We can only see an association that suggests a possible causal relationship."

Restless legs syndrome is a common condition that causes people to feel an uncomfortable sensation in their legs when lying down, according to the U.S. National Institute of Neurological Disorders and Stroke (NINDS). The feeling may be a throbbing, pulling or creeping sensation. Restless legs syndrome makes it hard to fall asleep and stay asleep.

The exact cause of restless legs syndrome is unknown. It does seem to run in families, suggesting a genetic component to the condition, according to the NINDS. Restless legs syndrome has also been linked to some medical conditions, such as kidney disease and the nerve disorder peripheral neuropathy. It's also associated with the use of certain medications, and may occur during pregnancy.

Gao said many people with restless legs syndrome have low iron levels, and taking iron supplements often can alleviate the symptoms of restless legs syndrome. But, he cautioned, too much iron can be dangerous, so be sure to have your doctor check your iron levels before taking any supplements.

The current study included nearly 18,500 American men who were followed for eight years. At the start of the study, none of the men had diabetes, arthritis or kidney failure. The average age at the start of the study was 67.

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