Do Dairy Foods Cause Mucus Production?
The belief that milk might increase mucus production has been around for centuries, but it seems to be more myth than fact.
“The evidence is very scarce to support any relationship between dairy consumption and either symptoms of mucus or worse asthma control,” said Dr. Sonali Bose, assistant professor of pulmonary and critical care medicine at Icahn School of Medicine at Mount Sinai in New York.
In one study, researchers infected 60 Australians with the common cold and then had them live communally for 10 days. Participants tracked their dairy intake and collected their used tissues in sealed bags for later weighing by a research assistant. They found no relationship between intake of dairy products and the weight of nasal secretions, though participants could have adjusted their milk intake depending on whether they were feeling phlegmy or not, and their beliefs about milk and mucus.
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