Abstract
Although a significant portion of the anthropogenic impact on other species comes from our habit of eating other animals, little attention has been paid to understanding and quantifying how human carnivory threatens biodiversity globally. Here we consider anthropogenic threats to human food chains. We identify two mechanisms related to predation in the human food chain (predation and predation), one to competition (prey depletion and harassment), one to biohazards (any adverse effects caused by introduced livestock or alien species associated with human carnivory), four to environmental changes (destructive harvesting methods , animal husbandry, agriculture and climate change) and a different category for indirectly related processes is our high trophic state. Our findings demonstrate that human food chains are a major driver of the current biodiversity crisis and will hopefully contribute to increasing awareness of this fundamental but neglected aspect of human ecology.