Received wisdom is increasingly that we all have to eat less to save the planet, but received wisdom is wrong. A Diet of Austerity argues that, just as the poor are blamed for the economic crisis, Malthusian conceptions about food and ecology are being used to hold the working class responsible for climate change and global hunger. Challenging existing dogmas about overconsumption and personal responsibility, it shows that what we need to stop climate change is system change.