Boost your Immunity with Vitamin D

MP · 07-12-2011 02:29 PM

You can view the page at http://community.myprotein.com/conte...with-Vitamin-D

**profi** · 09-02-2012 10:49 AM

I'm very tempted to buy a bottle but I am worried that 2500 iu/day can be a bit too much. It's excellent value for money, though, but can you take these amounts for very long time? Or maybe only in winter?

**beN123** · 09-02-2012 07:13 PM

Quote

Originally Posted by profi

I'm very tempted to buy a bottle but I am worried that 2500 iu/day can be a bit too much. It's excellent value for money, though, but can you take these amounts for very long time? Or maybe only in winter?

2500iu is actually pretty minimal from what i've read. People have taken upto 50,000IU in a day without nside effects.

The only thing I keep in mind is that one would guess the body prefers making it's own from the sun, I wouldn't take a high dose of these frequently if you can expose yourself to some sunlight most days.

**Odevans** · 09-02-2012 07:38 PM

50,000ui is totally unnecessary.

People that live this far and beyond from the equated, need to supplement with Vitamin D, as we do not get enough rays from the sun, to produce the goods.

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**beN123** · 09-02-2012 08:44 PM

Quote

Originally Posted by Odevans

50,000ui is totally unnecessary.

People that live this far and beyond from the equated, need to supplement with Vitamin D, as we do not get enough rays from the sun, to produce the goods.

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Just using it to explain that 2500iu isn't a huge amount, 50,000 would be more than I would take in capsule form. Can't beat a bit of sun bathing on a nice hot day though!

**sendos** · 09-02-2012 10:28 PM

Quote

Originally Posted by profi

I'm very tempted to buy a bottle but I am worried that 2500 iu/day can be a bit too much. It's excellent value for money, though, but can you take these amounts for very long time? Or maybe only in winter?

Vitamin D is basically fool proof. You'd have to consume about 150 million IU for it to be toxic and i'd hate to think how many bottles that is! There is a hell of a lot of evidence to suggest that the RDA for vitamin D is absurdly low and far below adequate amounts. Considering the fact that 15 minutes in the sun in summer will produce 15,000 IU you're pretty safe with 2500. Ideally you'd get it from sun exposure and let your body do the work but there is a case for supplementation, here is a list of research regarding deficiency:

Vitamin D Council > About vitamin D > Vitamin D deficiency > Vitamin D deficiency: A global epidemic

That seems to be a decent website regarding information. I will say that there is some conflicting opinions out there though, look up the Marshall protocol and writings by Professor Trevor Marshall if you wan't a flip side to the pro-vit d camp. Most of his stuff centres around auto-immune conditions though. Personally I don't take any vitamin D, as soon as I starting taking above 500 IU a day the skin in the corners of my mouth start to crack/get really sore, and my eyes start going very puffy.

**SeanC** · 09-02-2012 11:22 PM

thinking of giving this a go. i work night shifts so im usually in bed for a good chunk of daylight hours especially in the winter months.
Im generally quite tired and achey so this may help out, Is 2500iu a good dose to start with ?

**profi** · 10-02-2012 10:14 AM

Quote

Originally Posted by sendos

Vitamin D is basically fool proof. You'd have to consume about 150 million IU for it to be toxic and i'd hate to think how many bottles that is!

Where did you get this? Any evidence? Medical studies? Please don't make figures up.

**sendos** · 10-02-2012 05:50 PM

Quote

Originally Posted by profi

Where did you get this? Any evidence? Medical studies? Please don't make figures up.

Are you aware of the existence of pubmed? You should really start doing your own research on these things if you really want the answers.

The figure was based on toxicity levels for dogs, LD50 is 3,500,000IU/kg. LD50 for rats is roughly 2,000,000IU/KG. There is obviously no known LD50 for humans but 150,000,000IU is a reasonable estimate for it to be toxic enough to kill you if you weigh 80-100kg.

Here is a study suggesting 4000IU (100mcg) daily is perfectly safe and maintains a serum 25(OH) D level within the physiological norms.

Efficacy and safety of vitamin D3 intake exce... [Am J Clin Nutr. 2001] - PubMed - NCBI

There are many more studies available using quick searches on pubmed regarding the safety of vitamin D intakes.