It's usually the other way around: hunger is one of the real causes of overpopulation. The more children a poor family has the more likely some will survive to work in the fields or in the city to add to the family's small income and, later, to care for the parents in their old age.

All this points to the disease that is at the root of both hunger and overpopulation: The powerlessness of people who must rely on food that is grown and distributed by wealthy people who have never felt hunger pangs, yet who determine how the land will be used, if at all and who will benefit from its fruits. High birth rates are symptoms of the failures of a social system — inadequate family income, inadequate nutrition and health care and old-age security. More myths about global hunger [1]