I just read an article about vitamin D and how the American Association of Pediatrics has doubled the recommended daily amount of it from 200iu to 400iu. It’s a good article and definitely worth checking out:
washingtonpost.com/wp-dyn/content/article/2008/10/13/AR2008101300995.html
Vitamin D sources include cod liver oil, milk, and can also be created by human bodies when exposed to sunlight. Exposure to sunlight has its own problems, so most people these days take supplements.
