If you are reading this article you have a 75% chance of having a low vitamin D level in your blood. Many current research studies reveal that being deficient in D can lead to a variety of unwanted health conditions. Therefore, pay close attention to the information below. 75% of Americans are reportedly lacking the optimal amount of this particular vitamin.So what if you are low in D? What is all the big talk about? Research studies have concluded the following possible correlation between having low vitamin D levels, and your health: heightened stress fracture risk, decreased immune function, elevated blood pressure, weakened bones, muscle weakness/pain, depression, cancer, and heart disease. This list of unwanted conditions should get your attention!Vitamin D is a fat soluble vitamin that promotes calcium absorption, and regulates inflammation as well as neuromuscular control. Yes, it is necessary for optimal health and fitness.The deficiency challenge occurs because the vitamin is not found naturally in many foods, and we try to protect ourselves from sun exposure which assists our bodies in producing D. As far as foods are concerned you can find D in fish, cheese, milk, fortified cereals, beef liver and egg yolks.According to scientists, eating these particular foods, and getting sun exposure may not be enough to push out of the low vitamin D status. Panels of scientists now suggest we need more than the 400 I.U. currently recommended. After many studies the overall opinion is individuals should be taking in between 1700 – 2000 I.U. per day to help prevent these potentially unwanted health conditions.How in the world are people supposed to get that much Vitamin D? Along with eating some of the foods mentioned above, and limited sun exposure, supplementation is the answer.In order to prevent a low vitamin D level you should look into taking a multi-vitamin that has D3 in it. That way you will assure yourself of preventing these unwanted health consequences.Please don’t follow the thinking that the more of this vitamin the better. If you get too much of a good thing you can reach toxicity levels which may bring other unpleasant health consequences. Therefore, it is recommended to stay under 10,000 I.U. each day to be on the safe side. Make sure you read the back of your vitamin supplement label, and account for the other ways you are getting D.For those participating in fitness programs vitamin D is valuable for preventing stress fractures, muscle tears, muscle weakness, and in regulating inflammation for proper exercise recover. It plays a huge roll in achieving fitness results.I strongly urge you to get your vitamin D levels tested. 75% of individuals will need to significantly boost up their blood levels in order to prevent low vitamin D health consequences. You have been warned!