Are allergies the cause of fatness?

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1. Guest499
   

    Experimenters have proposed that allergies and weight gain go together, as medicines that are taken to alleviate those allergies have some unpleasant side effects. Last year, researchers from Yale University published a study in which they told that the people who took antihistamines regularly were heavier than people who didn't take them at all. The study's writers used data from the Centers for Disease Control and Prevention's (CDC's) National Health and Nutrition Examination Survey 2005-2006 to analyze the body weight of 867 adults and their prescription antihistamine use. The experimenters warned that this was an observational study, and couldn't demonstrate whether antihistamines actually caused the weight gain or if obesity predisposes people to allergies.
   
   Later on, by using data from the same CDC survey, experimenters found that weighty children were more likely to suffer from allergies, specifically food allergies, than normal-weight children. Fat cells release cytokines, chemicals that promote inflammation, and an allergic reaction triggers inflammation as well. So people with high levels of inflammation in their bodies are likely to suffer from both conditions.

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