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Why does hair turn gray? - Harvard Health
alopecia areata: a disorder in which patches of hair may be suddenly lost, especially the colored (non-gray) hairs. This may lead to "overnight" graying because previously present gray or white hairs suddenly become more obvious. When hair growth resumes, it may be white or gray, but colored hair may eventually return. The bottom line
https://www.health.harvard.edu/blog/hair-turn-gray-2017091812226
Why Hair Turns Gray – Cleveland Clinic
Gray hair is really hair with reduced melanin, while white hair completely lacks it. That’s partly because of a gradual decline in the number of stem cells that mature to become melanin-producing cells. Scientists aren’t sure why. The cells may wear out, become damaged, or lose the support systems meant to keep them working.
https://health.clevelandclinic.org/why-hair-turns-gray/
Why Does Hair Turn Gray? - Gray Hair Facts - Prevention
Why does hair turn gray? “Gray hair is really hair with less melanin, what gives skin and hair color,” explains Azadeh Shirazi, M.D., a board-certified dermatologist. “While white hair...
https://www.prevention.com/beauty/hair/a40742296/why-does-hair-turn-gray/
Why Does Hair Turn Gray? - ThoughtCo
While this is a normal and unavoidable part of the aging process and is not of itself associated with disease, some autoimmune diseases can cause premature graying. However, some people start going gray in their 20s and are perfectly healthy. Extreme shock or stress can also cause your hair to go gray very quickly, though not overnight.
https://www.thoughtco.com/why-does-hair-turn-gray-607904
Why does hair turn gray? - Medical News Today
Research has shown that human hair follicles that produce gray or white hair have higher levels of cellular damage caused by free radicals. In these follicles, melanocytes and melanocyte stem...
https://www.medicalnewstoday.com/articles/318167
Why Does Our Hair Turn Gray As We Age And Can We Stop It?
Gray hair has minimal melanin, while white, or silver hair is colorless, meaning there is no melanin. And aging is the main cause. As we grow older, the melanocyte cells in our hair follicles start to die, causing a depletion in the melanin, or pigment. Over time, this leads to more colorless strands, which appear silver or gray.
https://www.discovermagazine.com/health/why-does-our-hair-turn-gray-as-we-age-and-can-we-stop-it
What Makes Your Hair Turn Gray - Your Hair Trends
Deficiencies in B12, iron, and zinc can all lead to graying hair. Stress can also be a factor in hair turning gray. When we’re under a lot of stress, our bodies produce more of the hormone cortisol. Cortisol can interfere with the production of melanin, the pigment that gives hair its color. Smoking can also cause hair to turn gray.
https://yourhairtrends.com/what-makes-your-hair-turn-gray/
The Truth About Why Our Hair Turns Gray - davidfranksalon.com
Gray hair seems to have a slightly different texture than pigmented hair. This is caused by the lack of melanin in the hair. The pigment in the hair helps protect it, and without the melanin the hair is more susceptible to damage from the sun. Heat is also challenge. Hot styling tools can yellow and dull white hair.
https://www.davidfranksalon.com/the-truth-about-why-our-hair-turns-gray/Gray Hair Guide: Everything You Need to Know About Going Gray
When your body stops generating melanin, hair goes gray, silver, or white. In layperson's terms: your hair goes through natural cycles of falling out and growing back, and after age 35, it's...
https://www.allure.com/story/gray-hair-guide-causes-and-care
