Why is Vitamin D significant?

so ya haha im writing a paper for my biology class about the benefits of Vitamin D in the body. like what it does for the body. and so yeah im stuck on this question right now that i have to write a paragraph about. i get that the sun helps our body...

I am a 38 yr old female with a Vit D level that tested at a level 30 seven months ago. I went on the perscription Vit D2 50000 IU once a week for 12 weeks then a maint. dose of 2000 IU Vit D3 daily. I just got retested and my Vit D is now 22. I live...

This also goes for vitamin k, iron, and etcetera. I'm looking at the One A Day woman's multivitamin and see that it has 250% daily value(vitamin D). This would be an overdose, especially if this much is taken daily...correct? And why do multivitamins...

I have like constent nausea. not throwing up just nausea.. but at night the past couple days it gets better. im on vitamin D supplements.. 50,000 units ever other week. it was every week but dr changed it cause i told him about my nasuea.. so it must...

I'm 28 weeks prego and my doctor told me I'm at a level 17 and they like to see patients at atleast 40. I have been taking 2000 IU of vitamin D3 since my first blood test at 8 weeks but it hasn't come up...someone told me that bottled reverse osmosis...

"I have hashimotos, my doctor had tests done and put me on vitamin D I assume the 50,000 is a standard dose (which was moderately low), but my doctors office called and said that my calcium is fine but that my kidneys are functioning high. They...

my dr prescribed 50,000 units of vitamin d. why?

Why doesn't the UK add Vitamin D to milk as is done in the USA and Canada? The USA and Canada have recognised the health benefits of this for years but not the UK.

mine was 16 and norman range is 30-70 that was two months ago,since doctor told me to take one tablet of 50,000 uints of vitamin D.. ive been having some nausea from this.. but why ? thanx. best regards