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  • With Mayo Clinic internist

    James M. Steckelberg, M.D.

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Question

Cold symptoms: Does drinking milk increase phlegm?

I've heard that you shouldn't drink milk when you have a cold because it increases phlegm. Is this true?

Answer

from James M. Steckelberg, M.D.

Phlegm is the thick, sticky mucus that drips down the back of your throat when you have a cold. Although drinking milk may make phlegm thicker and more irritating to your throat than it would normally be, milk doesn't cause your body to make more phlegm. In fact, frozen dairy products can soothe a sore throat and provide calories when you otherwise may not eat.

Next question
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References
  1. Pinnock CB, et al. Relationship between milk intake and mucus production in adult volunteers challenged with rhinovirus-2. The American Review of Respiratory Disease. 1990;141(2):352-356.
  2. Wuthrich B, et al. Milk consumption does not lead to mucus production or occurrence of asthma. Journal of the American College of Nutrition. 2005;24(90006)(suppl):547-555.

AN01455

Oct. 14, 2008

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