Researchers at the University of Alberta’s faculty of medicine and dentistry have found an association between childhood asthma and fast food. The study that’s been published in the journal Clinical and Experimental Allergy, found children who eat high-sodium, higher fat, and low in antioxidant junk foods more than once or twice a week were almost twice as likely to have asthma. The study involved 246 children aged 8 to 10 who had asthma, and 477 children without the disease and their parents who answered questions on whether the children were breast-fed, and how often they ate fast food. Children who were breast-fed exclusively for more than 12 weeks had a lower risk of asthma, but the benefit disappeared in kids who ate fast food often. The Asthma Society of Canada says over half a million children in Canada are affected by the sometimes fatal disease.