For over a decade, claims have been made that vitamin and mineral supplements may improve the symptoms of autism in a natural way. While not all researchers agree about whether these therapies are scientifically proven, many parents and an increasing number of physicians report improvement in people with ASD when using individual or combined nutritional supplements.
Malabsorption problems and nutritional deficiencies have been addressed in several as-of-yet unreplicated studies. A few studies suggest that intestinal disorders and chronic gastrointestinal inflammation may reduce the absorption of essential nutrients and cause disruptions in immune and general metabolic functions that are dependent upon these essential vitamins.
Other studies have shown that some children on the autism spectrum may have low levels of vitamins A, B1, B3, and B5, as well as biotin, selenium, zinc, and magnesium; while others may have an elevated serum copper to plasma zinc ratio, suggesting that they may benefit by avoiding copper and taking extra zinc to boost their immune system. Other studies have indicated a need for more calcium. There are several laboratories that test for nutritional deficiencies, but many insurance companies will not pay for these tests.
Perhaps the most common vitamin supplement used for individuals with ASD is vitamin B, which plays an important role in creating enzymes needed by the brain. In several studies on the use of vitamin B and magnesium (which is needed to make vitamin B effective), almost half of the individuals with autism showed improvement. The benefits include decreased behavioral problems, improved eye contact, better attention span, and improvements in learning.
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Other research studies have shown that other supplements may help symptoms as well. Cod liver oil supplements (rich in vitamins A and D) have resulted in improved eye contact and behavior of children with autism. Vitamin C helps in brain function and deficiency symptoms like depression and confusion. Increasing vitamin C has been shown in a clinical trial to improve symptom severity in children with ASD.
If you are considering the addition of vitamins or minerals to your child's diet, a laboratory and clinical assessment of nutritional status is highly recommended. The most accurate method for measuring vitamin and mineral levels is through a blood test. It is also important to work with someone knowledgeable in nutritional therapy. While large doses of some vitamins and minerals may not be harmful, others can be toxic. Once supplements are chosen, they should be phased in slowly (over several weeks) and then the effects should be observed for one to two months.