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Tall and thin not so great for lung disease
Date:1/23/2013

Tall, thin women face a greater risk of infection with nontuberculous mycobacteria (NTM), cousins of the organism that causes tuberculosis, according to researchers at National Jewish Health. Women with NTM infections also showed a weakened immune response associated with their fat cells, in a paper published in the Jan. 15, 2013, issue of The American Journal of Respiratory and Critical Care.

"Nontuberculous mycobacteria are widespread in the environment, yet only some people develop infections," said Edward Chan, MD, senior author and professor of medicine at National Jewish Health. "These findings help us identify who is at greater risk for the disease, and may point to more effective therapies down the road."

There are dozens of NTM species. Although the organisms can infect skin and other body parts, they most commonly infect the lungs. Lung infections are very difficult to treat, often requiring surgery and years of therapy with powerful intravenous antibiotics. NTM infections can be fatal. Evidence suggests that infections have been rising in recent decades.

NTM species are widespread in water and soil, yet only about five to six people per 100,000 develop NTM infections each year; the incidence is higher in individuals older than 50. An estimated 30,000 to 120,000 people in the US currently have NTM infections. Researchers at National Jewish Health, which sees more NTM infections than any other medical center in the world, tried to figure out why only some exposed patients develop these difficult infections.

Elderly women represent the vast majority of NTM patients, accounting for 85 percent of the patients seen at National Jewish Health during the study, and averaging about 64 years of age. The researchers chose to compare the NTM patients with control subjects at an osteoporosis clinic because these individuals were similar age, race, and gender as the NTM patients.

When compared to the women visiting t
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Contact: William Allstetter
allstetterw@njhealth.org
303-398-1002
National Jewish Health
Source:Eurekalert

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