Over-consumption is a concept related to overpopulation, referring to situations where per capita consumption is so high that even in spite of a moderate population density, sustainability is not achieved. The concept was coined to augment the discussion of overpopulation, which reflects issues of carrying capacity without taking into account per capita consumption, by which developing nations are evaluated to consume more than their land can support. A key argument, often made by Green parties and the ecology movement, is that consumption per person, or ecological footprint, is typically lower in poor than in rich nations.
In the long term these effects can lead to increased conflict over dwindling resources and in the worst case a Malthusian catastrophe.
However, the Worldwatch Institute said the booming economies of China and India are planetary forces that are shaping the global biosphere. The State of the World 2006 report said the two countries' high economic growth hid a reality of severe pollution. The report states