Why does your hair turn gray? – Speaking of Chemistry

It’s an inevitable side effect of longevity: your hair will turn gray. In this episode, Sophia Cai chats about the chemistry of your natural hair color, why it eventually turns white, and how scientists may be able to slow that graying down.

If this episode leaves you wanting more, check out these great resources.

First hair-graying gene identified
http://cen.acs.org/articles/94/i10/Fi…

A genome-wide association scan in admixed Latin Americans identifies loci influencing facial and scalp hair features
http://www.nature.com/ncomms/2016/160…

 

How Does Hair Know When to Stop Growing?

The hair on your scalp can get really long, but your leg hair doesn’t sweep the floor. Why not?

Hosted by: Hank Green
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Sources:http://www.webmd.com/skin-problems-an…
https://www.aad.org/dermatology-a-to-…
http://www.loc.gov/rr/scitech/mysteri…
http://physrev.physiology.org/content…
http://www.livestrong.com/article/109…
http://stemcells.nih.gov/info/basics/…
http://physrev.physiology.org/content…
http://news.yale.edu/2011/09/01/yale-…