Cause of gray hair and actual ageing

  • Thread starter Medicol
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  • #1
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I have learned that a catalase increase may help feed peroxide and reduce gray hair but on the other hand human ageing states that its heme-Fe increases automatically overtime. These two "facts" really confuses me. Could you help me explain this ? Thank you.
 

Answers and Replies

  • #2
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As we age their is less of the chemical that keeps the hair dark!

We need to find out this chemical!
 
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  • #3
Evo
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As we age their is less of the chemical that keeps the hair dark!

We need to find out this chemical!
The chemical is melanin.

What causes your hair's color to change? That has to do with the process controlling the production of the pigment called melanin, the same pigment that tans your skin in response to sunlight.

Every hair follicle contains pigment cells called melanocytes. The melanocytes produce eumelanin, which is black or dark brown, and pheomelanin, which is reddish-yellow, and pass the melanin to the cells which produce keratin, the chief protein in hair. When the keratin-producing cells (keratinocytes) die, they retain the coloring from the melanin. When you first start to go gray, the melanocytes are still present, but they become less active. Less pigment is deposited into the hair so it appears lighter. As graying progresses, the melanocytes die off until there aren't any cells left to produce the color.
http://chemistry.about.com/od/howthingsworkfaqs/f/why-does-hair-turn-gray.htm
 
  • #4
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Do all the cells die off?
 
  • #5
Chronos
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Just the colored ones.
 
  • #6
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Think You!
 
  • #7
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Tell me about the colored one's?
 
  • #8
Chronos
Science Advisor
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Melanocytes is the short answer. The produce the pigments that color hair. When they die out you get grey hair. It is not necessarily age related.
 

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