Thursday, August 25, 2016

Are You Experiencing Hair Loss?

Hair is approximately 80 percent protein, and is made up of tough fibrous proteins called keratin. Keratin is composed of long chains of amino acids. These chains are found within the fibers of the cortex of the hair. The amino acids comprising these chains are  Cysteine (10-14%), Serine, Glutamic Acid, LysineThreonine, Glycine, Leucine, Valine, Arginine, Aspartic Acid, Alanine, Proline, Isoleucine, Tyrosine, Phenylalanine, Histidine, Methionine.  Cysteine is by far the most abundant. A useful graphic of the composition of hair can be found at Sulfur bonds in the hair hold the chains of amino acids together. These same amino acids are the building blocks of skin and nails.  Amino acids , in general, are the building blocks of the entire body.
G. Harrap reported a study on the effect of age on hair root amino acid levels.  They concluded hair root  amino acid concentrations fall  by 32% from age 20 to 70 years of age.  We might conclude that aging does affect hair protein synthesis.  What would happen if there were no decline in protein synthesis  secondary to an increase in free form amino acid  precursor loading?  Am curious that I do not see more research on this as the hair loss industry is huge.
Deficiencies of the following nutrients  can be associated with hair loss: Biotin, Folic Acid, Vitamins B1, B2, B5, B6, Inositol, Essential Fatty Acids, Copper, IronZinc, Protein ( especially the amino acids L-cysteine, L-methionine, L-glutathione).
Excesses of Selenium and Vitamin A, Cadmium or Arsenic can cause hair loss.

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1 comment:

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