Why is it true that a family's health and prosperity are directly impacted by the usage of contraceptive methods?

The use of contraceptive methods has a direct effect on the health and prosperity of a family. It prevents the chances of frequent pregnancies, which otherwise affect the health of females. It helps in family planning by controlling the number of children in a family, thus reducing the chances of poverty. The health of a woman who has to bear the child is not deteriorated by near pregnancies. Health status and the resistance power of the children can be maintained by maintaining a gap between pregnancies with the usage of birth control methods.