obesity isn't the only potential toll that dinner from the drive-through may have on a person's health.
according to a new study, kids who eat lots of fast food have an increased risk of the most common chronic illness in children.
NBC's Renee Tessman has the details.
it's the kind of food we grab because it's quick and frankly, kids ask for it.
now a new study of more than 500,000 kids in over 50 countries links fast food to severe asthma, hay fever and eczema.
Dr. John Sweet, allergist: "it is an enormous survey it is quite impressive and consistent with other surveys that have been done in the past several years."
published in the journal thorax, the study said kids who eat fast food three times or more a week had approximately 30% increased risk in disease severity.
Dr. john sweet, allergist: "it was interesting that they found the same effects over many different countries."
it's important to make clear that this study does not say that fast food causes asthma, eczema or hay fever. it does suggest that it may make the severity of these conditions worse.
Dr. john sweet, allergist: "asthma, eczema and hay fever are all results of the body's immune system over reacting to things it should ignore."
on the flip side, researchers found a reduction in severity for kids who ate fruit at least three times a week. dr. sweet says that's because fruit and vegetables are full of anti-oxidants.
Dr. john sweet, allergist: "its believed a decreased consumption of these anti-oxidants can affect the airway in some way though its not clearly understood at this time."
and he says when kids fill up with fast food, they don't eat as much of the fruit and veggies which could be making them feel better.