Oh, I should add that one reason why a sugar binge gives a temporary boost in mood is that all those sugars do the same thing in the body, chemically, as carbohydrates. Carbohydrates are broken down into sugars eventually, although the process takes more time than with sugars. Sugars create a favorable condition whereby any tryptophan in the body (which is not a great amount if you have not eaten a source rich in tryptophan) can cross the blood brain barrier and the brain can make use of the tryptophan. The sugar induced chemistry is short-lived, however.

Cowgirl