Comments by "Matt Matt" (@CENTRIX4) on "What is the Origin and Reason for Blond Hair?" video.

  1. Blonde Hair And The Light Reflected From Snow The bands of wavelengths of Ultra Violet light reflected from snow can penetrate blonde hair to reach the skull on the skin to increase Vitamin D3 levels in regions with significant snow cover for a long period of time and very low ambient Ultra Violet levels at the earths surface. Ginger Hair And The Ultra Violet Bandwidth that Penetrates Dense Cloud Cover Droplets block Ultra Violet light and a very dense cloud cover and a dense drizzle will block almost all of the Ultra Violet light. The bandwidth of Ultra Violet light that can penetrate a very dense cloud cover and a dense drizzle to reach the earths surface can penetrate ginger hair to reach the skin on the skull to produce Vitamin D3. Thus blonde hair and ginger hair are biological adaptions to increase Vitamin D3 levels in regions with very low ambient Ultra Violet levels at the earths surface. Male hair darkens as males grow older as testosterone causes the hair to darken however this darkening of blonde hair is far less so in women. Women tend to retain their blonde hair as when they are pregnant carrying an unborn child it will enable them to increase their Vitamin D3 levels to support the pregnancy more than if their natural blonde hair darkened using the above stated method of the light reflected from snow. I personally do not agree with the sexual selection method of why blonde hair remains in females as they grow older. The reason black and mixed race women have so many maternity problems in Northern Europe is due to zero Vitamin D3 levels during the pregnancy as a result of their dark skin being unable to produce Vitamin D3 from the very low ambient Ultra Violet levels at the earths surface in Northern Europe. Maternity problems in black and mixed race women living in Northern Europe are not due to racist medical professionals.
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