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7 Sneaky Reasons Your Hair is Going Grey Too Soon

Because you wondered what was up with all those silver strands.

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1. Your mom (or dad) greyed early

Steel-coloured locks are partly in your genes, says Doris Day, MD, clinical associate professor of dermatology at New York University Langone Medical Center and author of Forget the Facelift. A new study published in Nature Communications isolated one gene variant linked to greying after researchers analyzed hair features of 6,000 Latin Americans. Though you might be surprised about just how much grey you have if you’ve been colouring your hair for years (or decades), says Dr. Day. And you can blame mom and dad. Just like whether you go bald or not, greying genes come from both sides of the family, says Dr. Day.

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2. You may have an autoimmune condition

The autoimmune skin disease called alopecia areata can lead to bright white strands. As the National Alopecia Areata Foundation (NAAF) explains, people with the condition develop small, round, smooth patches on the scalp, and they can completely lose hair on their head or body. “This happens because your immune system attacks your hair follicles, making your hair fall out. When it grows back, it grows back white,” explains Dr. Day. Some 6.6 million people in America have or will develop the condition, according to the NAAF. If you notice worrisome hair loss or a bald patch, talk to your dermatologist.

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3. 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. Day. “It’s really about what gets to the follicle level that will make the most marked difference. While these environmental issues may have an impact, other reasons, like stress, matter more,” she says. (More on that in a minute.) Here’s what your hair is desperately trying to tell you about your health.

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4. You’re super stressed

When President Obama entered office his hair was dark. Five years later, people were concerned: He completely transformed to silver. (Time.com has a handy time lapse showing the president’s hair evolve from 2009 to 2014.) The stress-going grey link is hotly debated. However, says Dr. Day, “stress will accelerate your genetic destiny.” Meaning, if you’re not going to go grey any time soon, stress is unlikely to change your hair colour. But if going grey is in your genes, stress can make your hair turn grey faster and earlier-unless you make an effort to manage stress. Don’t forget how much you need to include stress busters like these into your day.

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5. You’re exposed to cigarette smoke

Whether it’s you or someone else in your house doing the puffing, exposure to cigarette smoke can affect your hair colour. Research published in 2013 found that smokers have 2.5 times greater odds of early greying, likely because of the huge amounts of free radicals generated by lighting up. Count this as one more reason to quit-or encourage a loved one to break the habit.

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6. Your hormones are changing

One glance at a photo of you a decade ago can tell you this, but your hair is not the same now as it was then. Thanks to hormones, your hair can change over time in texture, density, and, yes, colour. “This process starts to be most noticeable when you turn 30. “That’s the age when people start to come in and complain about these issues,” says Dr. Day. Experts are still trying to understand precisely how hormones (like estrogen, progesterone, and cortisol) influence greying, she says. And certainly, there are women in their 50s going through menopause who have not a strand of grey hair. It may be a trifecta of events coming to a head: your genetics, environmental factors, and hormonal changes.

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7. It’s your age

You may not be ready for the grey, but your hair is. Melanin production-what gives hair its pigment-decreases with age. For every decade after you turn 30, your risk of going grey increases 10 to 20 per cent, according to the Library of Congress. So while some people may be able to maintain their natural hair colour for longer, it’s inevitable. “In time, everyone’s hair goes grey,” according to the site.

This article originally appeared on RD.com.

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