In recent weeks, India’s air quality has taken a steep downturn, with “severe” pollution levels reported in cities such as Delhi, Gurugram, and others. Celebrity nutritionist and holistic wellness expert Luke Coutinho has issued a strong warning about the worsening air, calling it a public health crisis that is already affecting millions. In a recent Instagram post, Luke admitted he is also struggling to cope with the toxic air—a feeling shared by many of his patients. “Dear citizens, this is more than a health issue; it’s a matter of social justice. Delhi’s air is a serious public health emergency, and parts of Mumbai are in poor to hazardous condition. This is a biological threat,” Luke stated in his post.Air Pollution And PM2.5Luke explains that the primary culprit is PM2.5, which are tiny particles can enter the bloodstream, bypassing the body’s natural defenses and causing inflammation. “This isn’t just about coughing. Long-term exposure increases the risk of heart disease, stroke, cancer, chronic lung disease, and even lung and brain damage in children,” he adds.The good news is that research shows reducing exposure, improving nutrition, and training the lungs can lower inflammation by 20 to 40 percent, according to Luke. He also shares a guide to help families start protecting their lung health.Luke Coutinho's Guide to Protecting Your LungsHere's a detailed guide on how to protect your lungs from toxic air, by Luke CoutinhoFoundation 1: Aggressive Exposure ReductionTo cut down exposure, the first step is to treat indoor spaces as your new outdoor environment. Avoid going out between 10 a.m. and 4 p.m., and check air quality indices like AQLin or SAFAR, especially keeping children indoors if the AQI is above 150. When stepping outside, wear a properly fitted N95 or KN95 mask to ensure 80–95 percent protection, as surgical masks are insufficient.Indoors, treat air purifiers like essential medical devices. A HEPA purifier in the bedroom can reduce particulate matter by 50 to 70 percent, and it is important to replace filters regularly. Avoid incense, candles, and fireworks, and use a damp mop rather than sweeping to minimize dust. Lastly, quit smoking entirely, as it compounds the lung damage caused by pollution. Reducing exposure is the single most effective step and can slow lung decline by up to 30 percent.Foundation 2: An Anti-Inflammatory Nutrition PlanA diet rich in anti-inflammatory, high-antioxidant foods can reduce pollution-related damage by as much as 35 percent. Include two cups of leafy greens like spinach, kale, and Swiss chard daily, which can be added to smoothies or soups. Add one to two cups of steamed cruciferous vegetables such as broccoli, cabbage, and cauliflower; quick steaming is better than boiling.Consume two to three servings of antioxidant-rich fruits like guava, apples, and strawberries, with guava highlighted as an excellent source of vitamin C. Include one cup of carotenoids or lycopene from foods like carrots and tomatoes, noting that cooking tomatoes with a little oil improves absorption.Get omega-3 fats from two to three servings of fatty fish per week or one handful of nuts and seeds daily, such as salmon, walnuts, or flaxseeds, which support heart health. Limit processed sugars, refined carbs, excess salt, and deep-fried foods to under 10 percent of total calories, as they promote inflammation. Stay well-hydrated with two to three liters of water daily to thin mucus and support the lungs’ natural cleansing processes.Foundation 3: Evidence-Based SupplementsLuke suggests remembering key supplements with the code CODE-Z: C for vitamin C, O for omega-3s, D for vitamin D, E for vitamin E, and Z for zinc. Vitamin C (500–1000 mg/day) from guava and strawberries acts as a powerful antioxidant for the lungs. Omega-3s (EPA/DHA) from salmon or walnuts (1000–2000 mg/day) help reduce inflammation from pollution.Vitamin D (2000–4000 IU/day), found in cod liver oil and fortified milk, supports immunity and lowers infection risk. Vitamin E (200–400 IU/day) from sunflower seeds and almonds protects lung cells with fat-soluble antioxidants. Supplements are helpful during acute pollution exposure, but food should remain the primary source of nutrients. It is important to take supplements under professional guidance, cycle them every 2.5 months, and consult a doctor before starting any new regimen, especially for children.Foundation 4: Respiratory Resilience with Breathing ExercisesTo strengthen the lungs, practice targeted breathing exercises and maintain humidified air. Pursed-lip breathing involves inhaling for two to four seconds and exhaling for four to six seconds through pursed lips; practicing this for five minutes twice daily can ease breathlessness.Diaphragmatic breathing strengthens the main breathing muscle, allowing for deeper and more efficient breaths. Additionally, five minutes of steam or humidified air daily keeps airways moist and helps clear mucus, supporting overall respiratory resilience.But remember, always keep your doctor informed before starting any new supplements or changing your diet, especially for children or if you have an existing health condition. Don’t ignore early warning signs, like persistent cough, fatigue, or shortness of breath, which should be checked promptly. Above all, focus on minimizing your exposure to polluted air first.