The words and pictures documenting the famine in the Gaza strip are horrifying.

The coverage has led to acrimonious and often misguided debates about whether there is famine, and who is to blame for it – most recently exemplified by the controversy surrounding a picture published by the New York Times of an emaciated child who is also suffering from a preexisting health condition.

While pictures and words may mislead, numbers usually don’t.

The Nobel prize-winning Indian economist Amartya Sen observed some decades ago that famines are always political and economic events, and that the most direct way to analyse them is to look at food quantities and prices.

This has led to decades of research on past famines. One observation is that dramatic increases in food prices always mean there is a famine, even though not every famine is accompanied by rising food costs.

The price increases we have seen in Gaza are unprecedented.

The economic historian Yannai Spitzer observed in the Israeli newspaper Haaretz that staple food prices during the Irish Potato Famine showed a three- to five-fold increase, while there was a ten-fold rise during the Great Bengal Famine of 1943. In the North Korean famine of the 1990s, the price of rice rose by a factor of 12. At least a million people died of hunger in each of........

© The Conversation