Dr.Elizabeth Halvorson, assistant professor of pediatrics at Wake Forest Baptist and colleagues conducted a prospective study and have found that obesity is not a risk factor for severe acute respiratory illnesses, including the flu, in children or adults.The research has been published in the current online issue of the International Journal of Obesity.
The study findings were unexpected, said the study’s lead author, Elizabeth Halvorson, M.D., assistant professor of pediatrics at Wake Forest Baptist.”Published data from studies undertaken during the 2009 pandemic flu season showed it was a risk factor, but there weren’t many studies investigating the association between weight and severity of acute respiratory illnesses in children or adults during other winter respiratory seasons,” Halvorson said. “We undertook this study thinking that obesity would put patients at greater risk for other respiratory illnesses.”
The Wake Forest Baptist researchers enrolled 3,560 children and adults who came to the emergency department with acute respiratory illness over consecutive winter respiratory seasons from 2010 to 2014. Acute respiratory illness was defined as any illness that included symptoms such as fever, cough, runny nose, sore throat and difficulty breathing. Study participants were divided by weight category (i.e. normal-weight, overweight, obese) for analysis.
The team looked at several different measures that indicated severity, including admission to the hospital, treatment with antibiotics, length of stay after being admitted and the need for extra oxygen during hospitalization.
“We did not see increased risk for hospitalization based on weight in children or adults, but further study is needed with more participants from different regions in the country,” Halvorson said.
Limitations of the study included the relatively small sample size for children and the exclusion of people who received care at outpatient clinics and urgent care centers, Halvorson said.
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