1 . Pepper is one of the richest sources of vitamin C, a water-soluble nutrient that acts as a powerful antioxidant in your body. Getting enough vitamin C is very important for those who smoke. 2 . Eating apples is also linked to a lower risk of asthma and lung cancer. This may be due to the high concentration of antioxidants in apples, which include flavonoids and vitamin C. 3 . Turmeric is often used to promote lifelong health due to its powerful antioxidant and anti-inflammatory effects. Curcumin, the main active ingredient in turmeric, may be especially beneficial in supporting lung function. 4 . Tomatoes and tomato products are among the most nutritious sources of lycopene, a carotenoid antioxidant that has been linked to improved lung health.