Willpower - and the lack of it - have often been blamed for the inability of people to lose weight. While this may be part of the problem, it is not as large a factor as one would believe. Medical science can confirm that willpower alone will not make a diet or exercise plan reduce a person's weight, and that there are many more factors that need to be considered to successfully shed a few pounds. According to recent discoveries in the field of neuroscience, the mental reaction to the sight of preferred foods might potentially overpower the desire to not eat.

It is not unknown for people to experience cravings for certain foods, usually after seeing or smelling them. This can occur even if the person in question is not hungry. The researchers who found it have dubbed it "external food sensitivity," and it has been found to be able to influence people's eating habits.

A recent study found that obese adults now outweigh the number of those who are simply overweight, which signals a very bad sight for overall public health. It doesn't help that, despite the multitude of factors that need to be considered in this, most of the blame for obesity still falls firmly in the hands of the person who has become obese. The research team decided to attempt to find a reason to explain why some people are more likely to overeat. They found that some people appear to be more sensitive to stimuli related to food, and areas in the brain related to food signals were wired differently for those who ate more.

The study found that people's brains reacted to stimuli caused by neurohormonal changes that affected how the brains functioned. The ones that were rated to have a high sensitivity to food-related stimuli were found to be no hungrier than those who were normal in rating. However, after being shown images of food, their hunger ratings went up much higher than those in normal people, suggesting a susceptibility.