Yale researchers have found an association between obesity and antihistamine use based on data from the 2005–2006 National Health and Nutrition Examination Survey (NHANES). In the study , adults taking prescription H1 antihistamines were matched by age and gender with controls and compared on the basis of body measurements, plasma glucose, insulin concentrations, and lipid levels. What does tbis mean? It means that there is an association and not necessarily a cause-and-effect between we…