Most people have a sweet tooth. As a matter of fact, humans are predisposed to like sweet things. Science has long known that there are sweet "receptors" on the tongue that practically guarantee that we are going to want a sweet treat every now and again.

And, many scientists agree that this predisposition was born of a need for nature to ensure that humans were drawn to the taste of nutritional necessities such as apples, oranges, bananas, and other naturally sweet, and vitamin packed, biologically indispensable foods.

But, a desire for a piece of chocolate after a meal or even for an apple as a mid-afternoon snack is not the same as craving sugar-laden foods.

A craving is more than a desire; it's a physical reaction to a physiological need. The body craves what it feels it is missing. And, in the case of a sugar addiction, the body interprets a lack of sugar, and other high-carb foods, as an actual nutritional deficiency.