(Replying to a person who comment that it's not safe for a 12 year old girl to be pregnant.)

Thanks for your comments. Pregnancy has always been a great health risk to women since the beginning of creation. Many noble women gave their lives while giving birth to their children.

Notice in this March dimes report, where the health risks and problems associated with teenage pregnancies, but then they make a key admission:

“What are the health problems associated with teen pregnancy?

According to the March of Dimes, pregnant teenagers are especially vulnerable to complications, such as high blood pressure, anemia, and, most troubling, premature delivery. Their babies are more likely to be too small at birth and often have underdeveloped lungs, vision problems, or a host of other ailments.

Most of these problems could be prevented. As reported by the March of Dimes, teenage girls are usually biologically ready to have healthy babies. If they receive proper prenatal care, have a healthy diet, and stay away from cigarettes and alcohol, they have an excellent chance for a healthy pregnancy. Unfortunately, many girls fail to take these basic steps”

http://consumer.healthday.com/encyclopedia/men-s-health-28/men-s-problems-health-news-469/teen-pregnancy-643940.html

In most cases the issue with teenage pregnancies could be prevented with property prenatal care and health care. If you had a society, as some ancient societies had, where the older women rallied around these teen mothers and helped them to be as healthy as possible this would prevent most of the issues you see.

Now are there sometimes issues like you have said that may have to do with proper girth size? Yes. But there are many women who face this issue even into their 20’s(I have had female relatives that had to have C-sections for all their births because of this).

Women face different pregnancy challenges at different age groups, as well as if they are in a culture that does not have proper medical care and the support a young mother needs.