Most people who get fertility treatments are struggling to have one child, or at most a second - which is still below replacement rate. Fertility treatments fo

Most people who get fertility treatments are struggling to have one child, or at most a second - which is still below replacement rate. Fertility treatments for people who waited too long to have kids isn't going to contribute to overpopulation. In fact, if anything, by making it more viable to wait to have children until later in life, and thus increasing the age of first reproduction relative to lifespan (i.e. slowing the reproductive cycle), fertility treatments could contribute to a slowing of population growth.