Aggressors may deliberately block the biological reproduction of the colonized group in order to gradually reduce its demographic potential. The method consists of depriving people of the physical ability to conceive or carry a child. This is implemented through direct medical violence, such as involuntary sterilization, or through the systematic creation of an environment unsuitable for pregnancy and childbirth. The use of this technique makes it possible to weaken the community in the long term while avoiding the mass physical elimination of the current generation.