VITAMIN D | D3 | Importance, Functions, Causes, Normal Ranges of Vitamin D  

Hello | Welcome Back to Our RU-vid Channel ‪@allabouttests‬
In Todays's Video We Are Goimg To Know Basics of Vitamin D/D3
1.What is vitamin D.
2. Where does vitamin D produced/Synthesized in Our human Body.
3. what functons does vitamin d do,
Importance of vimamin d.
4. Causes of low levels of vitamin D.
5. Normal Ranges.