Malnutrition is a lack of proper nutrition caused by not eating enough, not eating a nutritious diet, or an inability to use the food consumed. Nearly 67% of India's population suffers from malnutrition. Symptoms include fatigue, dizziness, and weight loss. Untreated malnutrition can cause physical or mental disabilities. It is important to eat a variety of nutritious foods like fruits, vegetables, grains, proteins, and dairy. Malnutrition can cause diseases like kwashiorkor, marasmus, anemia, and mumps. Treatments include dietary changes, supplements, and eating fortified foods. Causes include reduced nutrient absorption, traditional behaviors, anorexia, metabolic damage, and nutrient deficiencies.