There are 7.8 billion people in the world today --- and if we think that the statistical data shows too much population of the world, then we would most likely to think that it must be reduced. Well, personally, I think that we could not and should not forcefully decrease those numbers. However, I believe that we can raise an awareness to do almost the same as the other. Hence, it must start within a family. Natural birth control for me is the moset approprite way of decreasing the population growth. This birth control method is a cheap, practical, and 'less immoral' and 'less condemnable' one. And by using this kind of bith control method, we will give the involved persons free to choose and to make a decision whole-heartedly.