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WEDNESDAY, April 16 (HealthDay News) -- New preliminary research suggests that exposure to the chemical formaldehyde, present in a variety of workplaces, could greatly increase a person's chances of developing Lou Gehrig's disease.
The findings aren't definitive, and only a few thousand Americans are diagnosed with the condition -- also known as amyotrophic lateral sclerosis (ALS) -- each year.
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Still, the study results deserve attention, especially since formaldehyde hasn't been considered an ALS risk factor before, said study author Marc Weisskopf, an assistant professor of epidemiology and environmental health at Harvard School of Public Health. "It's a result that we view as very intriguing and worthy of follow-up."
The findings were scheduled to be released Wednesday at the American Academy of Neurology annual meeting, in Chicago.
ALS progressively causes damage to the nerve cells in the brain and spinal cord. Patients lose the ability to control their muscles, and they typically become paralyzed. There's no cure for ALS, and treatments have limited value.
Weisskopf and his colleagues examined statistics from an American Cancer Society study of more than 1 million people who were followed for 15 years.
The researchers first examined the participants' responses in 1982 to questions about exposure to 12 different chemicals, including formaldehyde. Then they followed up between 1989 and 2004 to see what happened to those people.
The researchers found that 617 men and 539 women died of ALS during the study period. Only those who reported exposure to formaldehyde had a higher risk -- 34 percent higher -- of developing ALS.
Formaldehyde is used in the manufacture of a variety of products, including particle board, clothing, glues, cosmetics and shampoo. People who work in medical facilities and mortuaries may also encounter it on the job.
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