Child-bearing is taxing on a young woman's immature body, often resulting in a very unpleasant condition called fistula, death of the fetus, and sometimes the death of the mother. Young women who bear children early are often robbed of an education, their ability to be gainfully employed, and they often become dependent on men who not necessarily good husbands or good fathers, or they live as single mothers with their children in a hand-to-mouth existence.

In some countries, single women or women without a solid marriage end up sending their children into the streets. Egypt, for example, has 9% of its population comprised of street children.

Young women who start having children early are more likely to have more children than their sisters who did not start early, who more likely got an education, started a career, and waited until later to get married.

In addition, when teens have children, then more generations are alive at the same time, meaning economic hardship for the families involved, and meaning a larger population of people. If older people insist on prolonging their lives, then younger people must delay parenthood.

Unfortunately, young women's bodies are maturing earlier these days, partly due exposure to certain plastics, but also nature has not caught up with today's lifestyles and today's teen body is still prepared for life 150 years ago. Add this to the sex sold on TV, and it is no wonder that young women are tempted to experience sexual intercourse.

In conclusion, if a region is experiencing a net population growth rate (even 1% doubles in 70 years), or if it is already exceeding carrying capacity, it is important for sex education, family planning, and self-esteem programs to be concentrated on young women in their teen years.