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Melanin is the pigment that gives skin its colour. People with dark skin have more melanin than people with light skin.
Melanin is produced by cells called melanocytes in the epidermis (layers of the skin).
Melanin is found in the hair, skin, eyes. Melanin determines skin colour in humans.
- The amino acid tyrosine is a precursor of melanin
- Freckles are literally little spots (or concentrations) of melanin
Melanin may give some protection against ultraviolet light damage, which is why lighter-skinned people get burnt after minimal exposure to the sun, while darker-skinned people do not suffer sunburn after short sun exposure.
Last reviewed: 14 January 2007 || Last updated: 30 September 2007
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references
- Marieb EM, Hoehn K. Human Anatomy & Physiology. 7th edition, 2006. Benjamin Cummings Publishing
- Tortora GJ, Derrickson BH. Principles of Anatomy & Physiology. 11th edition, 2005. Wiley Publishing
To learn more, go to the the following web sites:
- Sydney Melanoma Unit - UNSW (Australia)
- Adelaide Melanoma Unit - Adelaide Uni (Australia)
NOTE: Mega doses of any type of vitamin, mineral, amino acid or herbal supplement cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of complementary supplements.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.
