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The pineal gland was originally believed to be a "vestigial remnant" of a larger organ (much as the appendix is now thought to be a vestigial digestive organ). It was only after the 1960s that scientists discovered that the pineal gland is responsible for the production of melatonin, which is regulated in a circadian rhythm. Melatonin is a derivative of the amino acid tryptophan, which also has other functions in the Central Nervous System. The production of melatonin by the pineal gland is stimulated by darkness and inhibited by light. The retina detects the light, and directly signals and entrains the suprachiasmatic nucleus (SCN). Fibers project from the SCN to the paraventricular nuclei (PVN), which relay the circadian signals to the spinal cord and out via the sympathetic system to superior cervical ganglia (SCG), and from there into the pineal gland.

The pineal gland is large in children, but shrinks at puberty. It appears to play a major role in sexual development, hibernation in animals, metabolism, and seasonal breeding. The abundant melatonin levels in children is believed to inhibit sexual development, and pineal tumors have been linked with precocious puberty. When puberty arrives, melatonin production is reduced. Calcification of the pineal gland is typical in adults.

Pineal cytostructure seems to have evolutionary similarities to the retinal cells of chordates. Modern birds and reptiles have been found to express the phototransducing pigment melanopsin in the pineal gland. Avian pineal glands are believed to act like the suprachiasmatic nucleus in mammals.

Reports in rodents suggest that the pineal gland may influence the actions of drugs of abuse such as cocaine and antidepressants such as fluoxetine (Prozac); and contribute to regulation of neuronal vulnerability.
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INDICATIONS: For temporary relief of symptoms related to sleep disorders, Seasonal Affective Disorder, jet lag, and depression. INDICATIONS: For temporary relief of symptoms related to tryptophan sensitivity including sleep disorders, bloating, colitis, poor digestion, celiac disease, flatulence, gastritis, constipation, digestive malabsorption, food sensitivities, sleep disorder Deseret Biologicals Glandulars are produced from healthy tissue obtained from specific organs. The ingredients are from certified safe bovine sources which have been carefully tested to insure purity.
For temporary relief of symptoms related to sleep issues and jet lag. For temporary relief of symptoms related to tryptophan sensitivity including sleep issues, bloating, poor digestion, flatulence, constipation, and food sensitivities. Administration of these formulations may help to rebuild tissue when malfunctioning organ structures are in a diseased state.