more then anything, I think what helped me (Colin) to start thinking about my own health was not having health insurance. Before it was so easy just to leave my health up to a guy in a lab coat that went to collage for about as long as I did, but came out with more then a bachelors (I was never a very good student). Then me and my wife decided to move to Nashville, that meant quitting my job. It's OK I thought, I will get another one in like a week, no problem... not quite how it went, I found a job after about a month of looking, but it did not have any benifits and I thought I did not make enough to get my own insurance, so I did nothing for a long time. after a while I started to look into my health on my own, reading everything I could and I came across an article on Lew Rockwell's website that talked about not trusting doctors and looking into your health for your self and not trusting pharmicutical companys either. seemed like a lot of distrust to not take him seriously, so I read the article I decided to give vitamin D a try. If you don't feel like clicking on the link, it basicly says that vitamin D is one of the most important things for you, and the US recomendation does not even cover what your body needs for calcium convertion alone.
So I went to the store, and found that most shops don't sell you the 5000 IU's that guys like Dr. Axe and the Vitamin D Council recommend, so I went on-line and found Vitamin D-3 on Amazon's website. This is the best price I have found so far. It is amaxing how many functions of the body are controled by vitamin D.
During the summer you can get most of what you need by the sun, but during the winter, you really need to take supplements.