Here are the common reasons and some signs to look for in regards to determining whether or not you may be vitamin D deficient. Nearly 1 billion people worldwide are deficient in the sunshine vitamin and this deficiency can cause serious health issues if not addressed.
If you have a deficiency, you should seek medical care and get on a treatment plan to increase your vitamin d levels.
![](https://i.ytimg.com/vi/lbOJariQgxs/maxresdefault.jpg)