Grey hair could be a sign of healthy body

Spanish scientists, who studied wild boars, found that having grey hair and a rather grizzled look could actually be a sign that you have a long and healthy life ahead of you.Scientists said gray hair, which results from absence of melanin, seemed to be a mark of good health in wild boars.As with human hair, wild boars show hair graying all across their body fur, Galvan said.But we found that boars showing hair graying were actually those in prime condition and with the lowest levels of oxidative damage, he said.Scientists, however, said that being a redhead could make one more susceptible to illness, an observation found in wild boar populations.According to the report published in the current issue of the journal Physiological and Biochemical Zoology, wild boars with reddish coats have more cell damage than more mundanely colored wild pigs.They say the reason is that the production of red pigment uses up an antioxidant that could otherwise destroy the free radicals that damage cells.In humans, studies have found that red hair and red pigments, or melanins, in skin are linked to higher rates of cancer.The researchers looked at two types of melanin, the pigment that gives our hair and skin its colour.Galvan and his colleagues wanted to know whether producing red hair would eat up an antioxidant GSH, leaving the bodys cells more vulnerable to free radicals.They found that the more pheomelanin a boar had in its fur, the more likely it was to have less GSH in the muscle cells and more oxidative stress.