Citrus fruits deserve a spot on this list, too. Because they are loaded with a key vitamin (vitamin C), citrus fruits strengthen our immune systems, keeping our bodies in tip-top shape. A strong immune system is essential for those with lung issues.
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According to Dr. Devereux, catching a cold can easily exacerbate your existing lung problems; therefore, getting your daily dose of vitamin C is more than crucial. Besides, a meta-analysis published in Scientific Reports discovered that as little as 100 milligrams of vitamin C consumed every single day could reduce lung cancer by as much as 10 percent.
P.S.: Smokers should consume even greater amounts of vitamin C to protect against lung inflammation.