Malnutrition has become one of the major pressing health issues across the world. We witness it every day under the traffic lights, temples, schools, colleges and villages. The magnitude of this problem can be gauged by the fact that roughly 42.5% of children under the age of 5 are underweight in India, which is the highest in the world. But before we go into the details of the causes and the solutions, let’s find out what malnutrition actually is.