There are other reasons for the food shortage besides fuel,some of them are minor,but a reason none the less.
There is a town not far from me that has a farm,that farm supplies food and shelter for the homeless,all that is asked is that the people help with the crops and livestock.
Not far from there is a homeless shelter,free food,bed,some clothes..All that is asked is that you have a turn with the preparation of meals.
Which one do you think gets the most homeless people?