Inositol is a naturally occurring nutrient that is usually classified as a carbocyclic polyol. The most common form of inositol is sometimes referred to as myo-inositol. In the human body, inositol plays a major role in preventing the collection of fats in the liver, as well as promoting healthy hair growth. The presence of the nutrient also aids in efficient processing of nutrients into the conversion of energy, which in turn helps the body to maintain a healthy metabolism. Inositol also can be considered brain food, as the nutrient is necessary to properly nourish the brain.

The sweet nature of inositol comes in part from the properties that make up the nutrient, in particular the component of cyclohexanehexol. While still a form of sugar, inositol works differently from glucose. The main information about inositol in the body has more to do with what happens when there is a deficient amount present. A lack of inositol in the system can lead to such conditions as constipation, high cholesterol, problems with vision and general health of the eyes, and hair loss.

While there is no doubt that inositol is helpful to the normal operations of the human body, studies continue to be conducted to determine if there is any definitive proof that adding more inositol to the diet will reverse any major health issue. Some studies indicate that inositol may impact illnesses like depression and cancer. Some researchers believe that inositol can work in conjunction with other nutrients to provide some recovery from an illness or health condition.

A number of foods contain at least trace amounts of inositol. Cereals with a high bran content are relatively good sources of inositol. Red beans, and in particular kidney beans, are also good sources. Among fruits, oranges and cantaloupes tend to have higher amounts of inositol present, although most fruits do have at least a small amount. Many of the currently popular energy drinks, sometimes referred to as boost drinks, will note that their formula contains inositol.

It should be noted, however, that there does not appear to be any energy drink on the market that contains more than a minute amount of the nutrient. In fact, one estimate is that it would take in excess of 300 standard sized energy drinks consumed in one twenty-four hour period to reap any type of benefit at all. Inositol is more easily obtained by eating a sensible and balanced diet each day, and not from any type of quick fixes.