Gray hair is caused by a loss in melanin, whereas white hair does not have any melanin at all. As you age, your hair produces less and less melanin that leads your hair to appear gray, and then eventually white. However, the speed that your hair loses melanin is largely attributed to genetics.
Genetic factors, stress, hair dyes, and other factors may contribute. The human body has millions of hair follicles or small sacs lining the skin. The follicles generate hair and color or pigment cells that contain melanin. Over time, hair follicles lose pigment cells, resulting in white hair color.
Gray hair comes down to melanin, or rather the lack of melanin. Melanin is the pigment that gives hair its color. Gray hair has reduced melanin, while white hair completely lacks it.
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.
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.
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.
Reversible hypopigmentation of the hair can be seen in nutritional deficiencies protein-energy malnutrition and diseases of chronic loss of protein. Copper and iron deficiency also can cause graying of hair. A study reported significantly lower levels of copper in patients with PGH when compared to the control group.
Premature graying may be reversed with vitamin B12 supplementation only if vitamin B12 deficiency is the cause. If you are graying due to other factors, such as genetics, zinc deficiency, and medications, your gray hair cannot be reversed.
Scientists still don't know why some people turn gray early, late, or not at all, although they suspect genes, nutrients and possibly the immune system play a role in depleting melanocyte stem cells.
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.
Can Gray Hair Be Highlighted? Yes, gray hair can be highlighted. Just keep in mind that, when you're highlighting gray locks, the goal is to blend silver strays and create an ultra-natural finish.
Gray hair is one of the universal signs of advanced age. More likely than not, at some point in your life, your hair will start to go gray. Some individuals can maintain hair color well into their older age, but most do not.
The 80-year-old man who still has a full head of hair... and not one grey one. When strangers mistake him for a man 30 years younger, Ron Williamson doesn't turn a hair. He explains that he is in fact 80 - but his luxuriant dark-brown mane refuses to show any sign of age.
B complex vitamins such as B12, Biotin, and B6 are important for strength and colour of hair. Deficiencies of any of these nutrients are known to promote hair greying. B complex supplements are very useful in preventing greying.
The hair life cycle of your beard hair is shorter than your head hair. As a result, more melanocytes may be used at a faster rate. Another reason your beard hair appears gray faster than your head is visual. Your beard is front and center on your face, so you'll likely notice every gray hair growing.
Dairy and dairy products like curd and cheese are rich in vitamin B12. Since vitamin B12 is essential for making DNA, which is the genetic material found in all cells of the body including hair follicles, a deficiency of it can lead to under-nourishment of hair leading to premature greying.
The vast majority of people with gray hair have age-related graying. However, sometimes graying hair indicates an illness, especially if it occurs at a particularly young age. Health problems that may be heralded by gray hair include: vitamin B12 deficiency.
Dr. 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.”
This is one of the clearest signs of aging. Hair color is due to a pigment called melanin, which hair follicles produce. Hair follicles are structures in the skin that make and grow hair. With aging, the follicles make less melanin, and this causes gray hair.
If you think it's because you slept with your hair still wet, it's most likely not. In fact, we don't need centuries-old superstition to explain this phenomenon because white hair causes are pretty straightforward.
Gray temples likely have genetic origins, related to the way skin is formed in utero. "Local control in different regions of scalp may influence graying," Mirmirani says.
Stress can cause hair to gray prematurely by affecting the stem cells that are responsible for regenerating hair pigment. The findings give insights for future research into how stress affects stem cells and tissue regeneration.