13 Best and Worst Foods for Your Lungs

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Here's one more reason to put apples on your list of foods to eat everyday. A British study found that even after controlling for other factors, people who reported eating two to five apples a week had a 32% lower risk of asthma than people who ate less. Any amount less than that didn't seem to make a difference one way or the other. 

The authors speculate that beneficial compounds known as flavonoids may be responsible. One flavonoid in particular, khellin, has been shown to open up airways.

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