N H

Serotonin

About 13 5-HT receptors have been characterized. Only one is ionotropic. Transmission with 5-HT is critical for sleep, mood, sexual behavior, and aggressive behavior.

e. Histamine Histamine is formed by decarboxylation of the amino acid L-histamine catalyzed by histidine decarboxylase.

Histidine -

HN^ji N

Histamine

There are only about 100,000 neurons in the brain that are histaminergic; they are situated in the posterior hypothalamus and have widespread projections. Three types of histamine receptors have been identified, all metabotropic. Central histaminergic neurons control appetite and regulate the secretion of pituitary hormones. In the periphery, histamine is familiar as a hormone that is important in the inflammatory reaction and in the activity of exocrine glands, for example, in the secretion of acidic gastric juice.

The Sugar Solution

The Sugar Solution

Curb Sugar Cravings Once And For All With These Powerful Techniques. Sugar sensitive people might be low in specific neurochemicals that help us feel calm, centered, confident, and optimistic. Sugar is a drug that temporarily makes the sugar sensitive feel better, but with damaging consequences.

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