they say the eyes are the window to the soul, but they are also a wondow to your gene. Your iris regulates how much light enters your eye and protects internal organs from harmful UV radiation. But why exactly are irises colored? Find the answer here in this interesting infographic:
health
The Centenarian Lifestyle
Did you know that there are more than 50,000 centenarians (people who are 100 years and older) living in the U.S. and the number is
PositiveMed Team
Aug 10, 2012
