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The reason some people go gray in their 20s, according to a dermatologist

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  • We asked a dermatologist to explain why hair turns gray , and why it can happen to some people as early as their 20s. 
  • According to Dr. Jennifer Chwalek, genetics will likely determine whether or not you will go gray, and how soon it will happen. 
  • Our hair pigment is protected by an enzyme that fights the build-up of hydrogen peroxide.
  • As we age , this enzyme declines, allowing the hydrogen peroxide to break down the melanin in the hair shaft, causing the color to change. 
  • According to Chwalek, factors like stress and smoking that cause oxidative damage could also contribute to hair going gray.
  • Visit Business Insider's homepage for more stories.
Following is a transcript of the video. Graham Flanagan: Look at that silver fox. So distinguished, so sophisticated. Wow! But what if I told you that this guy was a millennial? It's true, just barely. According to Joe, he started going gray when he was 16. By 22, he was pretty much totally gray. Why does that happen? And why does hair turn gray in the first place? There's something about a silver fox, if you can pull it off. Actor: When I got rid of my gray hair, I wanted a natural look. Graham: But many people hate the idea of going gray. There's an entire industry built around fighting it.Actress: It's like you took off 10 years.Actor: And in just five minutes. Man: Just For Men. She'll love the way you look. Flanagan: So why does it happen?Dr. Jennifer Chwalek: The process of hair changing from darker color to white or gray with age is mainly due to genetics. It can be inherited from either parent. The color of our hair is determined by the form of hair pigment that we have. The pigment is actually produced along the hair shaft, and there are two main forms of hair pigment. There's eumelanin and pheomelanin. Eumelanin is what we see in brunettes and darker-haired people, and pheomelanin is what we see in blonds and redheads. The cells in our hair bulb produce a little bit of hydrogen peroxide, which is a metabolic byproduct, and typically there's an enzyme called catalase that breaks this down to water and oxygen. But as we age, there's declining levels of catalase, and this allows the build-up of hydrogen peroxide in the hair bulb, which damages and destroys the melanocytes, or the pigment-producing cells, of our hair.Flanagan: So I wanted you to take a look at my colleague Joe here. Joe is technically a millennial. He started to go gray when he was 16, and by 22, it was pretty much gray all over. What happened to Joe?Chwalek: So when individuals gray early in life before the age of 20, it's called premature graying, and this is due to genes. And we know there's one gene, in particular, that's been targeted called interferon regulatory factor 4, which is important in regulating and producing melanin in the hair. Joe was lucky enough to inherit some genes that predisposed him to developing gray hair early in life.Flanagan: Obviously, Joe has gray hair on his head. When you go gray on your head, does the hair on the other parts of your body go gray as well? No, no, Joe, Joe! We can picture it. Chwalek: So you can grow gray hair anywhere on your body. Wherever you have hair, the hair is susceptible to oxidative damage and eventually going gray. Flanagan: So the main cause of going gray is genetics, but what role can stress play? After all, Obama didn't look like this when he showed up at the White House. Chwalek: So it's controversial the role that stress has in hair graying. We know that stress creates oxidative damage in the body, and it's been linked to a lot of premature-aging syndromes. So it's thought that the stress, that stress causes oxidative damage, which may cause damage to the melanocytes and may cause us to grow gray earlier. We know that smokers tend to go gray more so than the general population, and again it's felt that it's probably due to the oxidative damage that smoke causes and how it affects the pigment-producing cells in the hair. I think eating a well-balanced diet, so you make sure that you don Číst dále >>>

Aborigines of Arnhem Land, Australia, (ca 1950)

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17.5.2019 23:18
travelfilmarchive
Aborigines Arnhem Land Australia 1950

A documentary film about the indigenous aborigines of the Northern Territory of Australia introduced by Ray Forrest. To license footage from this film for commercial use visit: www.travelfilmarchive.com Číst dále >>> Přeložit do en

Gold City, Johannesburg (1950s)

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17.5.2019 23:12
travelfilmarchive
Gold City Johannesburg 1950s

A film from the Adventures in Africa Series about Johannesburg in South Africa in 1950s. To license footage from this film for commercial use visit: www.travelfilmarchive.com Číst dále >>> Přeložit do en

47 perfect Father's Day gifts that are all under $50

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Insider Picks  writes about products and services to help you navigate when shopping online. Insider Inc. receives a commission from our affiliate partners when you buy through our links, but our reporting and recommendations are always independent and objective. 44100_1_1200px 2

  • Father's Day is June 16, and the holiday is already creeping up on us. 
  • If you're looking for thoughtful, useful gifts that won't break the bank, start with the 47 under $50 below.
  • If you don't find the perfect gift on this list, take a look at more  Father's Day 2019 gift ideas here .
Ideally, you'd be able to empty the coffers for dad on Father's Day. If money was of no object, you could rent out an amusement park or buy him a little quaint island for when retirement rolls around. But, if you're working with a budget, you can still get and give him roughly the same feeling with any of these thoughtful gifts under $50. To help you with your shopping, we've put together 47 gifts that fit the bill. Even if you just grab a comfortable throw blanket he can keep and head over for a movie and popcorn, dad might just love the gesture most. If you're looking for more Father's Day gift ideas , we have you covered:  Below are 47 gifts under $50 the dad in your life will love for Father's Day:SEE ALSO:  50 thoughtful gifts your dad actually wants this Father's Day — for every budget An Omaha Steaks gift box Omaha Steak Entertainment Sampler, $49.99 Whether dad likes grilling steaks or just loves eating them, a sampler of delicious meat will get the job done.  A Hydro Flask water bottle Hydro Flask 32oz. Wide Mouth, $39.95 Perfect for everything from camping to everyday use, this Hydro Flask water bottle is our top pick for the best water bottle you can buy . During  Outdoor Gear Lab's  testing, ice resisted melting for nearly 24 hours, and water was ice cold for more than a full day. A Harry's shaving kit Číst dále >>>

Down Under We Go, (ca 1950)

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17.5.2019 22:57
travelfilmarchive
Down Under 1950

A travelogue from the late 1940s about Australia. To license footage from this film for commercial use visit: www.travelfilmarchive.com Číst dále >>> Přeložit do en

How to change your Mac computer's password, or reset it if you've forgotten it

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macbook pro 2017

  • If you know your Mac computer's current password, you can log in and set a new one in System Preferences.
  • If you've forgotten your password and cannot gain access to your account, then you'll have to reset your password.
  • You may be able to use your Apple ID or log into an admin account (if you have one) saved on your computer and change the password for your account.
  • Visit Business Insider's homepage for more stories .
There are a number of reasons why you might want to change the password on your Mac . Perhaps you gave it to a family member and grew to regret that decision, maybe you want to change it to practice good device security, or like many of us, maybe you just forgot your password entirely. Whatever the reason, you're in luck — resetting a Mac password is a breeze. Just follow the short steps below and you'll be logged back in. How to change your Mac password If you know your password, you can login to your account and reset it with a few easy steps. 1. Log into your Mac. 2. Open the Apple menu (the Apple logo at the top-left of your screen) and choose "System Preferences." You may also have it pinned to your menu bar (it's a gray gear). 3. Click "Users & Groups." 2 4. Select your user account on the left of the box and click the padlock in the bottom left to make your changes. 3 5. Click "Change Password." 6. Enter your current password, your new password (twice) and a hint to help you remember your password (don't make it too obvious). Click "Change Password" to complete the process. 4 How to reset your Mac's password if you've forgotten it If you've totally forgotten your Mac 's password and cannot gain access to your account, then you'll need to reset it. Before you attempt to reset your password, check that you're typing the correct upper and lower case letters and that Caps Lock isn't turned on. Your password field may also have a question mark, which will display a password hint when clicked. If this doesn't help you remember your password, then follow these steps. Reset using Apple ID You may be able to reset your password using your Apple ID. Číst dále >>>

New York City (1947)

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17.5.2019 22:53
travelfilmarchive
York City 1947

A film from Carl Dudley's This Is Our Land series about New York City in the late 1940s. To license footage from this film for commercial use visit: www.travelfilmarchive.com Číst dále >>> Přeložit do en

Sáblíková fandila hokejistům na MS, přeje jim zlato

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Bratislava - Atmosféru hokejového mistrovství světa v Bratislavě dnes okusila i rychlobruslařka Martina Sáblíková a trojnásobná olympijská vítězka si jako fanynka duel českých hokejistů... Číst dále >>>

This $90 shower head filter has vitamin C and essential oils to help soothe dry skin and hair — I saw effects immediately after one use

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Insider Picks  writes about products and services to help you navigate when shopping online. Insider Inc. receives a commission from our affiliate partners when you buy through our links, but our reporting and recommendations are always independent and objective. Vitaclean shower head 4

  • After I moved from from Los Angeles to Joshua Tree last year, I noticed my skin was becoming dry and dull, and my hair looked fried and frizzy. The culprit was hard water, which is filled with chlorine and magnesium that can irritate skin and hair.
  • When I installed the Vitaclean HQ Shower Head + Filter (currently $90 on Urban Outfitters) , my issues cleared up almost immediately.
  • Vitaclean's filters feature vitamin C and essential oils, so they add vitamins and nutrients to your water flow while also removing nasties for skin and hair that's soft and healthy.
When I packed up my apartment and left Los Angeles — my home of almost a decade — to live a more low-key life in the Joshua Tree desert last year, I had high expectations. Among them were daily hikes, no traffic, and mornings spent in blissful meditation. Oh, and permanently sun-kissed skin and long, flowing, hippie hair — the perfect accessories for my new desert-dwelling lifestyle, right? Not exactly. While I did manage to opt out of traffic and go on some epic hikes, my skin and hair did not love my new home as much as I did. My skin became dry and hair became lifeless almost immediately, and I blamed it on the humidity, or lack thereof — desert air is D-R-Y. I bought myself a humidifier, which helped a little bit, but for some reason, my face remained covered in flaky patches and pimples, and my hair still looked fried and frizzy. Eventually, I found the culprit — hard water . As soon as I installed the  Vitaclean HQ Shower Head + Filter (currently $90 on Urban Outfitters) , to eliminate excess chlorine and mineral content, my issues cleared up. Vitahead shower head My experience is hardly unique; anyone's who's made a significant move has likely noticed how the air and water of a brand-new city can affect your beauty routine. "Kristina [Velkova] and I both felt frustrated with the effects of hard water when settling to live in London," Sara Douglas, co-founder of Číst dále >>>

25 Father's Day gifts that are Amazon Prime-eligible and guaranteed to arrive in time

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Insider Picks  writes about products and services to help you navigate when shopping online. Insider Inc. receives a commission from our affiliate partners when you buy through our links, but our reporting and recommendations are always independent and objective. perfect scale

  • Heavy users of Amazon Prime's fast delivery options will appreciate this Father's Day gift guide. 
  • It features 25 Father's Day gift ideas that are all Prime-eligible and fit budgets of all types.
  • Find more Father's Day 2019 gift ideas here
You can't underestimate the benefits of an Amazon Prime membership . Chief among them is the convenient two-day shipping policy, which I've personally gotten so used to that I forget many other retailers can't guarantee such a fast delivery.  That's one reason why, as someone who isn't always great at planning ahead, I often find myself shopping on Amazon for gifts just a few days before the big event. Luckily, Amazon offers so many products across a variety of categories that I never feel limited as I last-minute shop.  This Father's Day , rest assured you'll have a gift to give your dad as long as you shop the millions of Prime-eligible items on Amazon. We found 25 of the best last-minute, Prime-eligible gifts to consider below.  For more great gift ideas, check out these Father's Day gift guides: SEE ALSO:  Useful Amazon Prime benefits beyond free 2-day shipping A fascinating cookbook that will help him improve in the kitchen Gift The Food Lab: Better Home Cooking Through Science, $33.64 Cooking is as much an art as it is a science. When you have the foundational knowledge of how heat, energy, and molecules interact with each other, you can make better-tasting food.  A wireless charging pad Gift the Mophie Wireless Charging Pad, $50.47 Sleek and convenient, the pad lets him simply place his phone on top to begin charging it (as long as he has an iPhone 8 or higher). The phone won't slip or slide, and neither will the pad itself. Plus, it still works if he has a thick phone case.  A pomade to style his hair Gift the Smooth Viking Hair Pomade, $11.35 A little goes a long way with this pomade that provides hold while still looking natural. It's not greasy and washes out easily.  A Wi-Fi compatible sous vide Číst dále >>>

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