Since fruits contain a fair amount of natural fruit sugars, such as fructose, it is generally recommended to limit your intake to no more than four servings, or two 8-oz glasses, of fresh fruit juice per day. If you suffer from hypoglycemia, diabetes, candidiasis, or gout, it is probably best for you to eat fruit in its whole form, or drink fresh fruit juice with food, or dilute it with an equal amount of pure water. Eating whole fruit and drinking diluted juice decreases the rate at which sugar enters your bloodstream compared to drinking concentrated fruit drinks.
Although fructose and other sugars are much sweeter than sucrose (white sugar), they are handled by the body in a different manner. For example, in order to be utilized, fructose must be changed to glucose in the liver. As a result, blood sugar (glucose) levels do not rise as rapidly after fructose consumption as compared to other simple sugars. Sucrose, which is composed of one molecule of glucose and one molecule of fructose, results in immediate elevations in blood sugar levels. While most diabetics cannot tolerate sucrose, most can tolerate moderate amounts of fruit and fructose without loss of blood sugar control. In fact, fruit is much better tolerated, as it has a lower glycemic index than white bread and other refined carbohydrates.