The above brings out a valuable point. A recent study puts it succinctly:
Hungry people are often difficult to deal with. A good meal can affect more than just our mood; it can also influence our willingness to take risk. (http://www.sciencedaily.com/releases/2013/06/130625073802.htm)
Previous studies have shown that:
... Animal behavior is radically affected by the availability and amount of food. Studies prove the willingness of many animals to take risks increases or declines depending on whether the animal is hungry or full. For example, a predator only hunts more dangerous prey when it is close to starvation. This behavior has also been documented in humans in recent years; one study showed that hungry subjects took significantly more financial risks than their sated colleagues. (Id.)
In this study, scientists at the Max Planck Institute conducted experiments with the fruit fly, Drosophila, which feed on rotting fruit and plants which release carbon dioxide. Fruit flies though perceive low quantities of carbon dioxide as a danger signal and flee.
In the study, the scientists presented the flies with "... environments containing carbon dioxide or a mix of carbon dioxide and the smell of food." (Id.). In response, the hungry fruit flies overcame their fear of the carbon dioxide much faster than the sated fruit flies. That is, when confronted with food, a hungry fruit fly (like a human) will take the greater risk, in order to eat and become full.
Why? It seems that when the fruit fly is really hungry, the nerve cell in its body that is instrumental in triggering the "flight " response is ignored and instead the fruit fly, like humans, looks at other internal and external factors and makes a decision whether the reward of eating is worth the risk of the danger at hand.
So... the moral is when making a decision, do it on a full stomach.
.... Just something to think about.