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.
Although the primary cause of premature hair graying (PHG) is considered to be genetic, certain environmental factors also play a role. Trace element deficiencies such as Vitamin B12, Vitamin D3, and calcium may also be associated with PHG.
It turns out you can blame Mom and Dad, at least a bit. Scientists say they've identified the first gene for gray hair. The variant, dubbed IRF4, is also associated with blonde or lighter-colored hair. That makes sense, because melanin is the pigment that paints hair with the chestnut, golden or raven hues of youth.
Vitamin B-12 deficiency is one of the most common causes of prematurely graying hair. Researchers have noted that vitamin B-12 deficiencies are often concurrent with folic acid and biotin deficiencies in people whose hair has started to turn gray early.
“Plucking a gray hair will only get you a new gray hair in its place because there is only one hair that is able to grow per follicle. Your surrounding hairs will not turn white until their own follicles' pigment cells die.”
Despite the claims made online and by product marketers, it's not possible to reverse white hair if the cause is genetic. Once your hair follicles lose melanin, they can't produce it on their own. As melanin production slows, your hair turns gray, and then white when melanin production has completely stopped.
While vitamins cannot reverse gray hair, they can slow down the process. Eating a diet rich in vitamins D, B5, and B12, iron, and calcium can prevent your existing hair from turning gray.
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.
Iron: beef, dark leafy greens, fortified cereals, oysters, white beans, dark chocolate, lentils. Copper: beef liver, oysters, unsweetened chocolate, potatoes, shiitake mushrooms. Selenium: Brazil nuts, tuna, halibut, sardines, shrimp.
Typically, white people start going gray in their mid-30s, Asians in their late 30s, and Blacks in their mid-40s. Half of all people have a significant amount of gray hair by the time they turn 50.
Grey hair and genetics
The average age for grey hair varies greatly, and one of the main causes of grey hair in your 20s is genetics. The age at which a person's hair turns grey is influenced by the IRF4 gene, and one specific variant (rs12203592) is a marker for premature greying.
Vitamins B6 and B12 have also been proven to boost melanin production. Goddard says that vitamin B6, also known as pyridoxine, has been found to trigger the production of enzymes and chemical reactions that boost the metabolism of the hair proteins (keratin and melanin) in the hair follicles.
Iron deficiency can also lead to grey hair. Iron is a vital mineral that helps create haemoglobin – the substance found in RBCs. Lacking an adequate amount of iron means lesser blood cells, which leads to insufficient oxygen supply to your scalp. Naturally, this causes grey hair at a young age.
Stress can cause hair to gray prematurely by affecting the stem cells that are responsible for regenerating hair pigment.
Some studies have demonstrated that grey and ageing hair can recover its original colour when nourished by diets rich in zinc and supplements formulated with this element. As an additional benefit, zinc also helps eliminate the dandruff present on the scalp.
Previous studies have not shown a relationship between life span and gray hair, including whether late onset of gray hair predicts longevity. Some research, however, indicates that gray or white hair can be a sign of early heart disease, regardless of age.
This buildup can damage the pigment-producing cells, leading to gray or white hairs. In women, graying usually begins right around the temples and then moves toward the top of the scalp. As it gets lighter, it may eventually turn white.
Neither dying nor cutting your hair will cause any permanent damage to the hair follicles. If you're going to try snipping your greys off, be sure to use small, sharp scissors and not trim too close to your scalp to avoid breaking the skin.
Having lower levels of vitamins and minerals can be associated with getting gray hair prematurely, according to a Cosmoderma article published in December 2021. The study noted that a lack of calcium, copper, ferritin, and zinc could lead to early gray hair. Another possibility is a vitamin B12 deficiency, Dr.