How Much Vitamin D Do I Need? SURPRISING | DrEricBergDC

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so i get this question a lot how much vitamin  d should we be taking on a daily basis well i  

think we should probably go to the experts right  the vitamin d council stated that healthy adults  

which i’m still trying to find some healthy adults  need about 2000 ius that’s international units  

okay per day if you’re getting little to  no sun other experts recommend 400 to 800  

ius per day now here’s the problem that i need  your help with okay i just don’t understand this

when we take vitamin d it’s in these units right  here international units but when they measure  

the blood it’s not in international  units it’s in ngs per milliliter okay  

so if you’re deficient in your blood how do  we know how much vitamin d to take because the  

units and supplements are ius okay so it’s kind  of weird i it’s i don’t know why they do that  

but if we take a look at the optimum concentration  in your blood of vitamin d it should be between  

40 to 60 ngs per milliliter okay  so if you had 20 ngs per milliliter  

that would be considered low right well let’s  convert 20 ngs per milliliter to international  

units per milliliter it would be 0.8 pretty small  but the question is how much blood do we have  

because this is per milliliter not all of your  blood so we have about five liters of blood in  

the average size person and that would give us if  we do the math four thousand international units  

okay vitamin d so people that are deficient  that have only 20 ngs per milliliter  

really have about 4000 international units  of vitamin d which is actually greater than  

what is recommended there’s some conflicting  information here isn’t there all right so just  

keep tracking with me here because if we take  the optimum concentration which is 40 to 60 okay  

how much vitamin d is this in international units  

well if you do the calculations it’s 8000 to  9000 ius that’s what’s normal in your blood  

so how are we going to get this if we’re only  recommending this or that that’s what i just  

don’t understand it doesn’t make sense to me  and on top of that i don’t think you’re going to  

absorb 100% of your supplements estimates show that  you really only absorb between 60 to 80 percent  

that’s in a healthy person of these vitamin  d supplements when you take them if you’re  

taking d3 not and so if we’re only absorbing 60  to 80 percent and you took let’s say 10,000 ius  

in one day you’re really only absorbing 6000  to 8000 international units of vitamin d3  

which just barely make the normal amount  that you need in your blood so there’s a  

big problem here because these recommendations  do not match what we really need to normalize  

our blood values and then on top of  that if you’re taking these amounts  

and you have a deficiency or you  have other problems like inflammation  

or you don’t have a gallbladder or you have gut  damage from past antibiotics or you’re older or  

you have insulin resistance or you are obese there  are so many barriers that are going to prevent you  

from absorbing this vitamin d anyway what i would  recommend for the average person is to take at  

least at least 10,000 ius every single day and on  top of that get some sun if you can just to meet  

the minimum requirements that your body needs and  another point i want to bring up is that vitamin  

d is the most important vitamin because it’s so  important for your immune system to maintain a  

healthy mood to keep inflammation out of your body  and not to mention your bone structure your teeth  

so it’s no wonder why the great majority of the  population is deficient in vitamin d so if you’re  

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