The World’s total population was increased tremendously. The average of working population of the world was 66 percentage, average of crude death rate was 8 and crude birth rate was 19. The Indian economy is the world’s seventh largest economy by nominal GDP and the third-largest economy by purchasing power parity (PPP) but India facing the challenges of widespread poverty, corruption, malnutrition, food insecurity and inadequate public health. This paper focuses mainly undernourished people in India and World, age composition wise population distribution and state wise underweight children in India.