Vitamin D has been in the news a lot lately.  Researchers are finding more and more reasons why vitamin D is helpful and integral to our health.  In the old days people would get vitamin D from the sun.  Spending roughly 20 minutes out in the sun with skin exposed at noon time during the summer can start the process, but if you are low (<40ng/ml) then more time in the sun without sun protection is needed.  You can also supplement vitamin D.  Make sure you are getting 2,000-4,000IU per day for regular maintenance in the form of 25 hydroxycholecalciferol.  Vitamin D levels can only tested thru a blood test.  Optimal levels are between 60-80ng/ml, anything >100ng/ml may be dangerous.

Always ask your healthcare professional on what dose of vitamin D you need in order to achieve optimal levels.