As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent color — like gray, silver, or white — as it grows.
Gray is Completely Natural and Often Genetic
It's a sign of the aging process, and there's absolutely nothing wrong with that. According to Harvard Medical School, there are many reasons why hair turns gray, but overall gray hair is mainly genetic and it's not an indicator of poor health.
There's a lot of misinformation about gaining back your natural hair color once it's started turning gray or white. While certain nutrient deficits and health conditions may spawn premature gray hairs, it's impossible to restore your natural hair color if your grays are genetic or due to natural aging.
Typically, white people start going gray in their mid-30s, Asians in their late 30s, and African-Americans in their mid-40s. Half of all people have a significant amount of gray hair by the time they turn 50.
It can be a shock to find your first gray hairs on your head, especially if you're only in your 20s. But women's expert Dr. Kirtly Parker Jones says a few gray hairs is perfectly normal, even for women in their late 20s and early 30s. However, stress, genetics and other factors can play a role.
A new study shows that stress really can give you gray hair. Researchers found that the body's fight-or-flight response plays a key role in turning hair gray. Your hair color is determined by pigment-producing cells called melanocytes.
Though, ageing is the primary reason of grey hair but premature greying of hair in early 20's or 30's is now common. Genetic factors, stress, lack of nutrition, chemicals, smoking or any underlying disease like anemia can also lead to premature greying of hair.
Kraleti doesn't recommend plucking or pulling the hairs out. “If there is a gray hair you must get rid of, very carefully cut it off. Plucking can traumatize the hair follicle, and repeated trauma to any follicle can cause infection, scar formation or possibly lead to bald patches.”
For most people, getting gray hair is a normal part of the aging process. Certain health conditions and lifestyle habits may contribute to getting gray hair early. As of now, it's not possible to reverse or treat gray hair, but more research is looking into whether this will be possible in the future.
Gray hair grows when hydrogen peroxide builds up in your hair follicle. "This causes hair to bleach itself from the inside out," says Debra Jaliman, MD, a dermatologist in New York and spokesperson for the American Academy of Dermatology. Gray hairs are thicker and wirier, so your hair gets coarser as they multiply.
The wrong diet can also jump-start graying
Lack of certain nutrients has been found to play major roles in premature graying. According to one study , low ferritin, calcium, and vitamin D-3 all affect graying, while another study concluded that low copper, zinc, and iron advance premature graying.
Lack of proper sleep and stress are main reason of premature greying of hairs. Such lifestyle increases the ageing process which in turn may affect the hair growth, volume and overall health.
Hair growth after damage
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 cells are absent.
In fact, hair doesn't actually "turn" gray at all. Once a hair follicle produces hair, the color is set. If a single strand of hair starts out brown (or red or black or blond), it is never going to change its color (unless you color your hair).
Alopecia and grey hair are associated with COVID-19 Severity.
This is when you notice hair appearing to turn grey, when there is a mix of dark colored and grey or white hair. As the person grows older and the body's ability to produce melanin begins to slow down, all the hair in the body turns grey or white and this when you begin to see all white hair.
"Your hair follicles have pigment cells that make melanin. Melanin is a chemical that gives your hair its color. As you age, these cells start to die. When there is a lack of pigment, new hair strands grow lighter and eventually turn to shades of gray, silver, and eventually white," Friese explains.
Your hair turns gray when you stop producing pigment.
The pigment that gives your hair (and skin) its color is called melanin, and it gets released as the hair grows, Dr. Day explains. However, as you age melanin stops forming and hair begins losing its color.
Some people develop their first strands of gray or white hair in their 30s or 40s, whereas others develop white strands in their 20s or teenage years.
When your strand turns gray or white, the pigment cells in the follicle surrounding the hair have already died. "In other words, plucking a gray hair will only get you a new gray hair in its place," says Gillen, so any plucking is pretty much pointless since you're simply delaying the inevitable.
It is purported that when Pantothenic Acid and folic acid are taken together it helps reverse graying by taking the hair back to its original color. Inositol, a substance found naturally in the human body, may encourage the growth and overall health of hair.
Genetics
If you notice white hair at an early age, it's likely that your parents or grandparents also had graying or white hair at an early age. You can't change genetics. But if you don't like the way your gray hair looks, you can always color your hair.
Your environment is polluted
Pollutants and toxins can cause you to grey faster, according to the Library of Congress. These chemicals generate free radicals-or oxidative stress-that damage melanin production and speed hair aging, studies suggest. But once hair grows out of the follicle, it's dead, adds Dr.
Vitamin or mineral deficiency — Any deficiencies of vitamin B-6, B-12, biotin, vitamin D, or vitamin E can contribute to prematurely going gray. Similarly, deficiencies in minerals like calcium, copper, iron, protein and zinc can also contribute to graying hair earlier than usual.