Understanding Gray Hair: Causes, Prevention, and Treatment

Gone are the days when gray hair was considered a sign of wisdom! Today, the appearance of gray hair is increasingly common even among younger individuals. Greying or whitening hair is a natural part of the aging process that typically begins around age 50 but can start earlier. While often associated with getting older, the causes of gray hair are varied and the possibilities for addressing it are plentiful.

The Science Behind Gray Hair

The primary cause of hair greying is the wearing out of melanocytes, the pigment-producing cells in hair follicles. Melanin dictates the color of your hair. Different blends can tint your hair hues of black, brown, blonde or red. The amount and combination of melanin determines hair color. As you age, cells in your hair follicles called melanocytes produce less melanin. It could happen because the color-producing cells wear out, get damaged or lose support systems in the body. The reduction in melanin fades your hair to shades of gray. White hair is a sign of very little or no melanin production.

When melanin ceases to be produced in the hair root, new hairs grow in without pigment, resulting in gray or white hair. It remains unclear why the stem cells of one hair follicle may fail to activate well over a decade before those in adjacent follicles less than a millimeter apart.

Factors Contributing to Premature Graying

There is no single reason for hair whitening. Instead, multiple factors contribute to the premature greying of hair. While genetics play a significant role in when and how thoroughly your hair turns gray, several other elements can influence this process.

Lifestyle Factors

Multiple factors contribute to grey hair if you do not have the genetic predisposition for it. These factors are smoking, stress, lack of nutrition, unhealthy diet & lifestyle, and thyroid problems.

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• Stress: Stress is a critical factor in the premature greying of hair. When you’re stressed, your body goes into fight-or-flight mode. This can affect the melanin levels in your hair follicles. There’s evidence that stress can deplete melanin-producing cells in your hair and bring early graying. The effect is linked to norepinephrine produced as part of your body’s natural “fight-or-flight” response to stressful situations. A healthy intake of Vitamin C can help decrease stress hormones in your blood. In addition to helping you manage stress and increase your energy level, vitamin C plays an essential role in producing collagen, which is necessary for healthy skin. It is equally beneficial for your blood vessels and the growth of tissue around the hair follicle.
• Smoking: There’s also a link between premature white hair and smoking. Smoking constricts blood vessels, which can reduce blood flow to hair follicles and cause hair loss. Additionally, toxins in cigarettes can damage parts of your body, including your hair follicles, causing early white hair.
• Pollution: Often overlooked, pollution is responsible for premature grey hair in several cases.
• Unhealthy Diet & Lifestyle: Apart from greying hair, these habits are detrimental to your overall health. Additionally, indulging in excessive consumption forces your body to constantly repair damage from these activities.

Nutritional Deficiencies

• Vitamin B12 Deficiency: Vitamin B12 is a vital nutrient essential for the appropriate development and functioning of various body parts, including blood cells, nerves, and the brain. A vitamin B-12 deficiency is associated with a condition called pernicious anemia, which occurs when the body can’t absorb enough of this vitamin. It helps to generate Red Blood Cells (RBCs) which transport oxygen to every part of your body, including the scalp. A lack of RBCs can lead to a lack of melanin, which causes premature greying.
• Iron Deficiency: 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.
• Other Vitamin Deficiencies: Any deficiencies of vitamin B9, B12, biotin, or vitamin D can contribute to premature graying. Lower levels of vitamin B12 and iron are linked to premature graying. Both nutrients play a role in the health of your hair.

Medical Conditions

• Thyroid Problems: The thyroid, a gland in the neck, plays an important role in many bodily functions. In people who have an underactive thyroid (hypothyroidism), hair may turn grey prematurely. An overactive or underactive thyroid can cause your body to produce less melanin.
• Autoimmune Diseases: An autoimmune disease can also cause premature white hair. This is when the body’s immune system attacks its own cells. In the case of alopecia and vitiligo, the immune system can attack hair and cause loss of pigment. Conditions like alopecia and vitiligo can result in gray or white hair as your immune system attacks melanin-producing cells.
• Other Medical Conditions: Some medical conditions, including autoimmune diseases, may increase a person’s risk for graying early. In fact, older research published in 2008 showed a connection between hair abnormalities and thyroid dysfunction.

Genetics

Your genetic makeup plays a big role in when (or if) you develop white hair. The age at which greying begins seems almost entirely due to 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.

Oxidative Stress

While graying is mostly genetic, oxidative stress in the body may play a part when the process happens prematurely. Oxidative stress causes imbalances when antioxidants are not enough to counteract the damaging effects of free radicals. Too much oxidative stress can promote the development of diseases, including the skin-pigment condition vitiligo.

Recognizing Premature Graying

The most evident symptom of premature greying is white hair popping anywhere on your scalp. It is easy to spot. You will notice your hair becoming grey, whitened or lighter than usual. When your hair starts to become grey or whitened at an early age, it is not just the colour that is changed but also the texture of the locks. Often, a person with prematurely greying hair will notice extreme sensitivity in their hair and scalp.

Addressing Gray Hair: Prevention and Treatment

There are multiple things you can do to slow down the premature greying process, prevent, and even reverse it. It’s possible to restore pigmentation in your hair, but it depends on the cause.

Lifestyle Adjustments

• Manage Stress: You must also avoid stress as this can cause premature greying of hair.
• Quit Smoking: Therefore, quitting smoking is advised to prevent new white hairs from forming.
• Protect your skin and hair from the sun’s UV rays.
• Adopt a healthy lifestyle.

Diet and Nutrition

• Eat a Balanced Diet: One of the most important things for protecting your hair is to eat a balanced diet. A balanced, nutritious diet will keep your hair healthy, which will prevent premature greying. Eat plenty of vegetables and fruits rich in antioxidants (like blueberries).
• Address Deficiencies: Anyone who has white hair resulting from a vitamin deficiency should consume more foods loaded with those vitamins. Vitamin supplements that are available over the counter can also correct deficiencies.
• Eating more antioxidants: A diet rich in antioxidants can reduce oxidative stress.fresh fruits and vegetablesgreen teaolive oilfish

Medical Treatments

• Treat Underlying Conditions: If your white hair is due to an underlying condition, treating that condition may help slow or stop its growth. For example, treating a vitamin B-12 deficiency or an underlying thyroid disorder may increase the amount of melanin (pigment) in your hair follicles, reducing the growth of white hair.
• Medication: Minoxidil is most commonly used to treat grey hair (Rogaine).

Natural Remedies

• Home remedies: Many people claim they have successfully treated grey hair with home remedies.
• Oil your roots regularly as it helps keep clumps of dead cells away from the growth area.
• Natural remedies: Regular use of natural remedies may slow down and possibly reverse white hair.

Cosmetic Options

• Hair Dye: If you don’t like the way your gray hair looks, you can always color your hair.
• Semi-permanent or demi-permanent color: The color lasts a few weeks and is a good option for people just starting to see gray according to King.
• Highlights: Scattered strands are lightened to blend the gray with the rest of your hair.
• Permanent color: King suggests using it once you have 45% to 50% gray. Some clients leave some gray around their face to make a statement.
• Hair products: If you don’t want to dye but still want to conceal the gray, King suggests a coloring tool such as spray-on airbrush hair makeup, which washes out with a shampoo.

Embracing Gray Hair

Grey hair itself isn’t necessarily ugly. More people are opting to "go gray". The myth that gray hair makes you old is just that -- a myth. If you were young, vibrant, active, healthy pre-gray, you're still going to be that way. It's all in the attitude you bring to it. If you think of it as merely another color choice, you won't be afraid of gray.

Read also: Coarse Gray Hair Shampoo Guide

Tips for Going Gray Gracefully

• If you’ve been dyeing, consider going "cold turkey" with a chic, short haircut.
• Work with a colorist to weave in highlights and use toners to minimize the transition line between your natural hair color and your former hair dye.
• Consider updating your haircut, if you're ready for a new look.
• Take care of your hair. Shampoos with a blue base can help prevent gray hair from developing a yellowish cast. Using a conditioning mask once a month keeps hair well-moisturized.
• Use a flat iron to make your hair look sleeker and shinier. Gray hair tends to get frizzy, and "a flat iron on your hair brings back the luster to it".

Gray Hair and Overall Health

White hair happens when your hair follicles lose melanin, the pigment that gives your hair color. If your hair is turning white at a younger age, it could be caused by genetics or an underlying health condition.

While grey hair is normal, it could be a sign that you’re lacking certain nutrients. It is not a grave disease or a health risk. There are no other known complications for premature grey hair. Furthermore, some studies suggest that grey hair might be related to faster hair loss. Therefore, you must consult a specialist for snubbing the problem as early as possible.

Common Misconceptions

Contrary to popular belief, stress has not been shown to cause gray hair.

Some people claim that if a person plucks a gray hair from their head, then multiple gray hairs may grow in its place. However, there is no scientific basis for this. It is possible for a person to pluck a gray hair from their head, but the gray hair will return. Further drawbacks include pain, discomfort, and potentially folliculitis.

Read also: Best Shampoos for Gray Hair Coverage

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