When faced with starvation, the body fights back. The first day without food is a lot like the overnight fast between dinner one night and breakfast the next morning. Energy levels are low but pick up with a morning meal.
Within days, faced with nothing to eat, the body begins feeding on itself.
People are starving in Syria because they are being starved. There is no shortage of food for these people. Both the government and the people fighting against the government are preventing available food from reaching the area.
Lord, have mercy!