Apples
Apples have many health benefits. And one of the many health benefits of eating apples is that they good for the lungs. Apples contain more than 1500 mg of vitamin C. Almost half of the vitamin C content is just beneath the skin. Eating an apple a day will undoubtedly keep the doctor away by boosting your immune system.
Apples contain high levels of an antioxidant flavonoid called quercetin which is also found abundantly in onions, tea and red wine, and may be important in protecting the lungs from the harmful effects of atmospheric pollutants and cigarette smoke.