Which vitamins are autistic's commonly deficient in?

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Do your research before taking a large dose of any one vitamin. Certain vitamins can be toxic. Excess A,D,E, and K, is stored in fat tissue and organs.

Some people suggested to consult with a medical doctor about the use of dietary supplements for autism. Research investigations found, however, that conventional doctors are poorly educated about supplements. Consulting with a nutritionist seems to be the right choice. Also, taking supplements ought to adhere to biological needs and requirements. Meaning, for example, that the main supplement should be a science-based multivitamin, rather than taking one or a few product in a piecemeal manner. Those more specialized supplements can be added depending on an individual's idiosyncratic situation.

He asked for links to studies, not some kind of lame google search that just turns up links to web pages about it.

Perhaps you can try again and show links to actual studies.

This. Doctors usually won't give you any substantial nutritional advice and most likely will prescribe a drug for you if they can. Also, it's important to do your own research; even if you see a nutritionist, he may not have your best interests at heart. Always take a professional's word with some skepticism (remember they are trying to make money off you)--do some Internet research on what your nutritionist/doctor tells you before blindly following their orders.

Do the research yourself, there are tons of links showing texts about the subject in the "lame" google page I showed. If you can't read it's not my fault.

Vitamin D: http://www.scientificamerican.com/artic ... and-autism.

I wouldn't recommend fooling around with stuff, but this one should be a no-brainer, if one is given to fooling around, given the amount of peer-reviewed research that has documented a correlation. If you have exceptionally light skin, you should definitely try it.

First it was vaccines, now vitamins...

Coming up next week - could Austism be cured by eating bananas?

The notion that vaccines have anything to do with it has been rather strongly shown to be nonsense.

The research on Vitamin D is ongoing.

For what it's worth, even if it should turn out that the Vitamin D link to Autism is wrong, it is still quite worthwhile taking Vitamin D to boost our immune system.

I think it's highly unlikely that vitamin D deficiency alone causes autism.

However, it might be a collateral damage from whatever does cause autism and also by itself cause some of the symptoms.

You're not going to cure yourself by taking vitamin D, but you might reduce some of your sensory issues and be able to interact with people more smoothly.

Particularly if you're extremely pale (meaning you may have a deficiency due to lack of sun regardless), try it.

4,000 IU of vit D3 isn't in the slightest bit bad for you.
It may say on the label that a supplement isn't designed to cure something, but that doesn't mean it can't.

I haven't heard any documented cases of anyone being cured of autism by taking vitamins that all autistic people are supposedly short on. If it was as simple as vitamins they would be selling them as a cure already. I won't deny that maybe they can help though, but I don't think autism is a case of vitamin shortage.

Based on the new definitions for vitamin D deficiency and insufficiency, it has been estimated that more than one billion people worldwide are either vitamin D deficient or insufficient.6,8,9 A multitude of studies have reported that 50-100 percent of the elderly men and women in the US and Europe are vitamin D deficient.6 Children, pregnant and lactating women, and young adults are at equally high risk. At the time of birth, 76 percent of mothers and 81 percent of newborns were vitamin D deficient even though the women were ingesting ~600 IU of vitamin D/day during pregnancy.6 It has been estimated that more than 50 million teenagers in the US are either vitamin D deficient or insufficient.16 Fifty percent of children ages 1 to 5 and 70 percent of children 6 to 11 years of age were found to be vitamin D deficient or insufficient in the US.17 Thirty to more than 50 percent of children living in India, China and Saudi Arabia were vitamin D deficient.6 Thirty-two percent of healthy physicians and medical residents at a Boston hospital who took a multivitamin containing 400 IU of vitamin D/day and drank a glass of vitamin D fortified milk/day were found to be vitamin D deficient. In Europe, very few foods are fortified with vitamin D and therefore both children and adults are at high risk for this vitamin deficiency. In the US, a 20 percent decline was reported in the serum 25(OH)D levels as measured by the national database NHANES III between 1994 and 2004. The major causes were obesity, lifestyle changes, decreased milk consumption and increased use of sun protection.18

Reports of Vitamin D deficiency from countries as diverse as Great Britain19 Austria,20 Germany,21 Finland,22 New Zealand23 and India24 indicate the scope of the pandemic. Even sunny Australia reports 30 to 50 percent of children and adults as being vitamin D deficient.6 The age groups included in studies of these countries include young adults and the elderly with wide variation by country of residence.25 Even where vitamin D fortification of milk has been in place for many decades, as in the US and Canada, there are still major deficiencies related to season, latitude of residence, age, gender and social conditions.26 Adequate exposure to summer sunlight is the essential means to ample supply, but oral intake augmented by both fortification and supplementation is necessary to maintain baseline stores.

There has been great concern about increasing vitamin D intake for children and adults because of potential vitamin D toxicity which causes hypercalcemia, hyperphosphatemia, nephrocalcinosis, and soft tissue calcification, all of which can contribute to increased risk of death. Studies have shown that adults can take up to 10,000 IU of vitamin D a day for at least five months without altering their serum calcium or urinary calcium output.42 One method for preventing rickets in neonates in the inner cities of Europe was to give a single 200,000 IU injection of vitamin D.1,6 Studies in children and adults receiving 2000 IU of vitamin D a day have not reported any toxicity.

Vitamin D intoxication is one of the rarest medical conditions that may be caused either by intentional or inadvertent exposure to excessively high amounts of vitamin D attained by ingesting an average of more than 10,000 IU of vitamin D a day for more than six months. In one case report, a man took 2 teaspoons a day of a product thinking it contained 1000 IU of vitamin D per teaspoon for more than six months. When he presented with vitamin D intoxication, an analysis of his vitamin D preparation was made and found to be undiluted and containing 1 million IU of vitamin D in 2 teaspoons.6