It's a little-appreciated frequent trigger," researcher Dr. Stuart Garay, a clinical professor of medicine at New York University Medical Center, said in a prepared statement.His
team's study of 235 people with asthma found 56 percent of them noting laughter as a trigger for their respiratory symptoms.
"Patients did report that during times when their asthma is well-controlled, they can laugh for longer without getting asthma symptoms," Garay
"That suggests that laughter-induced asthma may be a sign that a person's asthma isn't as well-controlled as it could be.People with asthma should be allowed to laugh," he
It's not clear how laughter can cause asthma symptoms, Garay
added, but it might involve hyperventilating.He
was surprised by the prevalence of laughter-induced asthma.
Coughing and chest tightness were the most common symptoms of laughter-induced asthma incidents, the study found.
The amount of laughter that can trigger asthma symptoms varied from person to person."For a majority of patients, mild laughter or even a chuckle will set off coughing.For others, laughing hard will bring on asthma symptoms," Garay