Hormone

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A hormone is a chemical released by a cell, a gland, or an organ in one part of the body that affects cells in other parts of the organism. Generally, only a small amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from one cell to another.

A variety of exogenous chemical compounds, both natural and synthetic, have hormone-like effects on both humans and wildlife. Their interference with the synthesis, secretion, transport, binding, action, or elimination of natural hormones in the body can change the homeostasis, reproduction, development, and/or behavior, just as endogenously produced hormones do.

Types of Hormone

Hormones can be classified as one of three different types, shown below with examples:

Toxicity and harm potential

Table from the 2010 ISCD study ranking various drugs (legal and illegal) based on statements by drug-harm experts. Anabolic steroids was found to be the 15th overall most dangerous drug.[1]

See also

External links

References

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  1. Nutt DJ, King LA, Phillips LD (November 2010). "Drug harms in the UK: a multicriteria decision analysis". Lancet. 376 (9752): 1558–1565. CiteSeerX 10.1.1.690.1283Freely accessible. doi:10.1016/S0140-6736(10)61462-6. PMID 21036393.  Unknown parameter |s2cid= ignored (help)