Asthma and Obesity Don't Mix

A new study has determined that asthma attacks are worsened by obesity. More from Reuters:
A BMI is the ratio between height and weight, and is used to classify people as underweight, overweight or normal weight.

"The greater dynamic hyperinflation means that obese individuals lose the ability to inhale as deeply or exhale as fully as normal weight individuals," Dr. D. Robin Taylor explains in an American Thoracic Society statement.

Taylor's team at the University of Otago in Dunedin studied the changes in airway expansion and lung volume that occur with acute constriction of the bronchial tubes in a group of 30 adult women with asthma. Ten women each were classified as normal weight, overweight, or obese, and lung volumes were measured.

The degree of bronchial constriction following the airway sensitivity test did not vary by group, the team reports in the American Journal of Respiratory and Critical Care Medicine. The only significant difference among the subjects was a decrease in vital capacity that significantly corresponded with increasing BMI.
“The number one health problem in the United States is obesity, and if the current trend continues, by the year 2030 all adults in the United States will be obese,” warns Dr. Fuhrman.
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