Home Remedies And Natural Cures Vitamin c, which is a powerful antioxidant, keeps your lungs functioning optimally and scavenges healthy lung vitamins oxidative stress. eat chili peppers, citrus fruits, kiwi, guava, kale, broccoli, and berries to get adequate of this nutrient in your diet. [ also read: best vitamin c supplements ] load up on vitamin e. See full list on steptohealth. com. Smoking reduces the vitamin c in your body by 25%. as a result, it’s necessary to increase your intake of this important vitamin, in order to heal your lungs after smoking. consequently, deficiency in vitamin c will make you more likely to suffer infections because your immune system is weaker. other problems that also come from this vitamin deficiency are: 1. an early appearance of wrinkles 2. insomnia 3. gum problems like pain, inflammation, and light bleeding. however, there are some foods where you can find this nutrient. 1. kiwi 2. lemon 3. mandarins 4. grapefruit 5. pineapple this helps you...