Studies of people with chronic fatigue syndrome show that it is not related to blood sugar fluctuations. A common myth is that sugar will give extra energy if taken before exercising or competing. Taking sweets just before a workout may bring on fatigue more rapidly, as the sugar triggers off the body's production of insulin, further lowering blood sugar available for quick energy. The belief that some children behave in unacceptable ways after eating sugar has been proven to be false. The same kids behave the same way without the sugar.
Sweets are a pleasure food for most people.
Many fruits are sought after mainly for their sweet taste, and are seldom eaten if not ripe, even though unripe fruit usually has equal nutritional value. It used to be thought that sugar is addictive, but there is no scientific evidence for this belief. Some people seem to be able to become addicted to almost anything, but this is more a reflection of their self-control than of any physical or chemical dependence. While we can all live without eating refined sugars, the control of sweets can be a serious problem for some people. Food labelers often hide sugars in their products by calling them other names.