Hair color is also associated with health, one of which related to cancer risk. Pigment or dye can bind to free radicals cause cancer, while gray hair has no pigment which would indicate the absence of free radicals.
For most people, gray hair would always complain because it gives the impression older than actual age. For those who may be old, faded hair color often covered up by wearing polish or paint your hair to look younger.
Yet a recent study published in the journal Physiological and Biochemical zoologist shows, the number of gray hairs show that the healthier a person in a certain sense. The reason, say gray hair when the color pigment or substance begin to decrease.
Research conducted by scientists from the Museo Nacional de Ciencias Naturales in Spain is also revealed that there are two kinds of pigment, eumelanin and pheomelanin that. Eumelanin gives brown or black color, while pheomelanin gives red or brown.
In contrast to eumelanin, pheomelanin requires a compound called glutathione or GSH to generate the color of the hair and skin. These compounds are antioxidants, which are supposed to protect the body from free radicals cause cancer.
These results indicate that the color formation process, particularly by the pigment pheomelanin spend GSH levels. As a result of oxidation reactions that produce free radicals increases, so the risk of cancer also increases.
This means, for the red hair so much gray hair became a good sign. Because the pigment or dye pheomelaninnya reduced GSH levels more awake and can be optimized in protecting the body from cancer-causing free radicals.
“Rather than indicating that the older age, more and more gray hair that would indicate better health conditions,” said Ismael Galvan, who led the study, as quoted by LiveScience, Friday (07/20/2012).
Unfortunately, as said by Galvan, a new study conducted on wild pigs that are believed to have similarities with human pigmentation process. But it is expected, the relationship between hair color with the cancer risk would not be much different when applied to humans.