Cravings for carbohydrate-rich foods cause many bulimics and binge eaters to center their binges around desserts and high-starch foods. Many individuals suffering from disordered eating commonly avoid foods low in carbohydrate and high in fat, and instead seek out excessive sugar, routinely using large quantities to sweeten foods and beverages. This may stem from a physiological and evolutionary need for ample carbohydrate to ensure proper neurological function. Large quantities of carbohydrate eaten in a short time frame are capable of altering neurotransmitter synthesis, producing a calming effect on the brain, and thus may be the impetus for such cravings in certain eating disorders and disturbances.
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