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High Density Lipoprotein (HDL)
The "good" cholesterol that helps remove cholesterol from cells. If insulin levels go up, then HDL levels go down. The lower your HDL level, the more likely you are to suffer cardiovascular complications.
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Hippocampus
The portion of the limbic system in the brain that integrates incoming nerve impulses to the hypothalamus, and is also the memory center of the brain.
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Hormone Releasing Factors
Hormones released from the hypothalamus that directly affect the pituitary and initiate the release of other hormones into the bloodstream. Many hormone releasing factors use cyclic AMP as their secondary messengers.
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Hormones
Biological compounds that communicate information at a distance. Hormones require specific receptors to begin their biological action and use second messengers to initiate the cellular process that uses that information.
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Hyperinsulinemia
The excess production of insulin. This is usually a consequence of insulin resistance in which the cells do not respond to insulin to reduce blood glucose levels.
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Hypothalamus
The portion of the brain's limbic system that integrates incoming information and either increases or decreases the release of certain hormones that instruct the pituitary gland to release hormones.
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