Search

Quick search by supplement name

Approved Ads

Cyclone Bars

Cyclone Bars

Cyclone

Cyclone

Progain Flapjack

Progain Flapjack

Thermobol

Thermobol

Progain

Progain

Vitamin D

(Known as 1-25-dihydroxyvitamin D, Calciferol, Calcitriol, Calcitrol, Cholecalciferol, Ergocalciferol, Vitamin D)

tickAids health
tickVitamin
How does it work?
Vitamin D is a fat-soluble vitamin found in certain foods and is manufactured in the skin as a result of direct exposure to sunlight. The liver and kidneys convert vitamin D from food sources or sunlight to its active form, calcitriol.
Who is it used for?
Vitamin D is important for anyone who is healthy and wants to stay that way. It's especially important for vegetarians (who can easily become deficient in vitamin D) and those living in dark climates, as sunlight helps to synthesise vitamin D.
How does it work?
The fat-soluble vitamin D's most important role is maintaining blood levels of calcium, which it accomplishes by increasing absorption of calcium from food and reducing the loss of calcium in the urine. Both help to spare the calcium stored in bones.

Vitamin D helps to maintain the strength of your immune system, aids in the formation of blood cells, and may also help to protect against various diseases [1, 2]. Vitamin D receptors have been found in the pancreas where insulin is made, suggesting that vitamin D is needed for adequate blood levels of insulin [3, 4].

Vitamin D deficiency is common in strict vegetarians (who avoid vitamin D-fortified dairy foods), dark-skinned people, alcoholics, and people with liver or kidney disease. Foods sources of vitamin D include cod liver oil, high-fat cold-water fish (e.g. salmon, mackerel, or sardines), and eggs.
How do I use it?
Taking too much vitamin D (more than 1,000 IU daily) can cause a number of adverse effects including excessive thirst, poor appetite, weight loss, tiredness, sore eyes, and itching skin.

What results can I expect?
Vitamin D helps the body maintain healthy levels of calcium and phosphorus and is essential for building and maintaining healthy bones.
What can it be combined with?
Vitamin D should be taken in combination with other vitamins and minerals, preferably as part of a multi-vitamin and mineral supplement.

1. Hayes CE, Cantorna MT, Deluca HF. (1997). Vitamin D and multiple sclerosis. Proc Soc Exp Biol Med, 216, 21-27
2. Cantorna MT. (2000). Vitamin D and autoimmunity: is vitamin D status an environmental factor affecting autoimmune disease prevalence? Proc Soc Exp Biol Med, 223, 230-233
3. Labriji-Mestaghanmi H, Billaudel B, Garnier PE, Sutter BC. (1988). Vitamin D and pancreatic islet function. I. Time course for changes in insulin secretion and content during vitamin deprivation and repletion. J Endocrinol Invest, 11, 577-587
4. Boucher BJ. (1998). Inadequate vitamin D status: does it contribute to the disorders comprising syndrome ′X'? Br J Nutr, 79, 315-327

Buy Multi-Vitamins from Nutriline Trusted Sellers:
Multi Vites Gummy VitaminsHair, Skin & Nails?Training-Peak? Multi-Vitamin Pack
$9.99$10.95$44.99
Share/Bookmark

This article is protected by international copyright protection ©2010.
Do not use this copy without reading this first

Click here to see the references for this article

Download FREE eBooks

How you can pack on lean muscle and lose body fat fast...

If you're not sure of how to train or what to eat or even which supplements are best for your goals, we're organised a special promotion from Musclebulletin, who are offering their £3.99 excellent 32 page book, 'The secrets to getting into shape' free to all Nutriline visitors. You'll find their information on how to pack on muscle, burn fat and succeed in your sport invaluable and easy to understand and follow.

guides

The Secrets of Getting Into Shape


Shows you how to train, eat and even sleep for maximum results. Everything from choosing a gym, training programmes, diet plans... to which supplements are best for packing on muscle size and losing body fat is covered - without the long waffle and boredom of 300-page 'fitness' books, that you never end up finishing! The style is to the point, easy to read and understand, and guarantees results!


The Easy Way to Achieving Awesome abs...

Frustrated at not seeing your abs, embarrassed about taking your top of at the beach this summer or the local swimming pool? Is your belly holding a layer of flab that is making you look like a beached whale or are you just trying to lose that extra layer of fat to ensure you look the best you can?

Zef Eisenberg sports nutrition and training expert and founder of Maximuscle has agreed to offer you his FREE booklet from his science publications collection to all Muscle Bulletin subscribers on; how to train, diet, eat and which supplements to take and more on getting an awesome set of abs.

Just fill in the form below and we'll email you straight away with download details. We hate spam as much as you do and don't share your email address with anyone.