[Feat]

This will happen sooner or later so don't worry, nature resolves the problems of overpopulation it happens with other species and it will also happen with us... I recommend you watching World War Z, it's based on overpopulation over all the zombie thing...

Zombies and overpopulation are two completely different things. The closest we'd ever get to zombies from a scientific standpoint is a modified version of rabies.