"human birth" is correct and can be used in written English.
For example: "The human birth rate is steadily increasing."
Human birth is difficult.
Human birth is an astonishing natural phenomenon.
Uncle Jack says: "Human birth is most unpleasant.
By the early twentieth century, the problems of human birth seemed to have been largely solved.
Tagline: "A far from human birth!" I definitely did not see Inseminoid.
Even so, human birth is a feat involving an intricate sequence of events.
They produce a multitude of high-tech, wheeled "biomachines" through a process akin to human birth.
The normal human birth ratio is 106 males for every 100 females.
Congenital heart defects (CHDs), the most common congenital human birth anomalies, involves complex genetic factors.
There is no way that human birth rates could outpace this, so our very existence contradicts the existence of vampires.
American zoos began developing contraception for highly fertile animals like lions in the 1970s, after breakthroughs in human birth control.
