Your nails can do more than just look pretty. They can tell you some things about your health!
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Sources:
https://www.aad.org/dermatology-a-to-z/for-kids/about-nails/how-nails-grow
http://health.clevelandclinic.org/2015/05/6-things-your-nails-can-say-about-your-health/
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3726881/
https://books.google.com/books?id=ekr4Bt683c8C&pg=PT244&lpg=PT244&dq=nail+pitting+inflammation+of+matrix&source=bl&ots=Vp2EmhSure&sig=-rAZbLYOuhJB6Y-eJraVMod0_p4&hl=en&sa=X&ved=0CEwQ6AEwBmoVChMI-sOBs9PYxwIVxZSICh3Lfg81#v=onepage&q&f=false
http://www.nhlbi.nih.gov/health/health-topics/topics/raynaud
http://www.nhs.uk/conditions/Fungal-nail-infection/Pages/Introduction.aspx
http://www.aafp.org/afp/2004/0315/p1417.html#afp20040315p1417-f6
