Sugar-sensitive people generally have a family history of alcoholism and are very fond of sweet foods and carbohydrates.

People with normal body chemistries experience the opiate effect of eating sugars as simply a pleasant feeling. For sugar-sensitive
people, this pleasant feeling can become a drug-like euphoria, which is powerful enough to create a strong attachment to the food or
drink producing the effect. Research into neurochemistry suggests the reason may be that the sugar-sensitive personality appears to
have a dysfunction in two separate, but connected, biological systems that affect emotions and behavior. These dysfunctions include
a lowered level of serotonin functioning and an augmented response to beta-endorphin within the reward systems of the brain
(Gianoulakis, Krishnan, and Thavundayil, 1996). The consequences of these separate disturbances are both physiological and
psychological.
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