Authors: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

We evolved living in more sunlight than today. We make our own vitamin D when sunlight hits our skin cells. Many people living in the northern hemisphere, however, suffer from lower levels of vitamin D during the fall, winter and spring.

Paul Stamets

Copyright © 2001 - 2014 BrainyQuote