Listening to Marketplace this evening, I heard guest Tyler Cowen mention that the people of Haiti are literally eating mudcakes.  This struck me as astonishing, so I immediately employed the use of Google to verify whether this was true.  Well, it turns out that it is:

At first sight the business resembles a thriving pottery. In a dusty courtyard women mould clay and water into hundreds of little platters and lay them out to harden under the Caribbean sun.

The craftsmanship is rough and the finished products are uneven. But customers do not object. This is Cité Soleil, Haiti's most notorious slum, and these platters are not to hold food. They are food.

Brittle and gritty - and as revolting as they sound - these are "mud cakes". For years they have been consumed by impoverished pregnant women seeking calcium, a risky and medically unproven supplement, but now the cakes have become a staple for entire families.

It is not for the taste and nutrition - smidgins of salt and margarine do not disguise what is essentially dirt, and the Guardian can testify that the aftertaste lingers - but because they are the cheapest and increasingly only way to fill bellies.

I'm not sure that I really have anything to add here (except perhaps to consider this in light of the likewise dire sanitation situation).  Mostly, I'm still trying to come to terms with the fact that people in the Western hemisphere during the 21st century are literally eating dirt.