Why Some Peoples Hair Turns Gray

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=QJMTk8sBfFE

We asked a dermatologist to explain why hair turns gray, and why it happens to some people as early as their 20's. According to Dr. Jennifer Chwalek, genetics will likely determine whether or not you will go gray, and how soon it will happen. • MORE HUMAN SCIENCE CONTENT: • The Real Reason Humans Have Those Sharp Front Teeth • • The Real Reason Humans Have Those Sha... • How Giving Birth Changes Your Brain • • How Giving Birth Changes Your Brain • The Bugs That Lay Eggs In Your Face • • The Bugs That Lay Eggs In Your Face • ------------------------------------------------------ • #Aging #GrayHair #ScienceInsider • Science Insider tells you all you need to know about science: space, medicine, biotech, physiology, and more. • Visit us at: https://www.businessinsider.com • Science Insider on Facebook: / businessinsiderscience • Science Insider on Instagram: / science_insider • Business Insider on Twitter: / businessinsider • Tech Insider on Twitter: / techinsider • Business Insider/Tech Insider on Amazon Prime: http://read.bi/PrimeVideo • Why Some People's Hair Turns Gray

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