The rapidly growing world population (especially fast growing in developed countries) has caused many consequences that humanity is facing: lack of food, underemployment, rising poverty. , epidemic broke out ... If people do not quickly control the birth rate, it will not take long (according to Thai An author in the Population Problem): "... every human on this earth has only one area left. paddy ". And limiting population growth is the way of human existence

The population growth rate too fast has a great influence on the development of social life. The rapidly growing population means that the amount of food and food available to each person will decrease. That has a serious impact on the situation of our country and many developing countries in the world. Because in fact, our country is still one of the poor countries, the rate of food shortage is still quite high. Besides economic issues, the issue of educational culture is also affected greatly. Population increases, the quality of services in terms of culture, education, and health will also decrease due to the need to follow the quantity to serve the majority. Families with many children do not have enough conditions for their children to study to a destination, not fully vaccinated ... This leads to a decline in economic situation, and the health of the people is not guaranteed, especially the elderly , women and children, low educational level ... This situation will directly affect very badly to the social life, to the future of the country.