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ISSN: 2161-0509
Journal of Nutritional Disorders & Therapy
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Nutritional and Environmental Influences on Autism Spectrum Disorder

Geir Bjørklund1* and Max Chartrand2

1Council for Nutritional and Environmental Medicine, Mo i Rana, Norway

2DigiCare Behavioral Research, Casa Grande, AZ, USA

*Corresponding Author:
Geir Bjørklund
Council for Nutritional and Environmental Medicine
Toften 248610 Mo i Rana, Norway, USA
Tel: +47 75 13 03 71
E-mail: bjorklund@conem.org

Recieved date: February 27, 2016; Accepted date: February 29, 2016; Public date: March 07, 2016

Citation: Bjørklund G, Chartrand M (2016) Nutritional and Environmental Influences on Autism Spectrum Disorder. J Nutr Disorders The 6:e123. doi:10.4172/2161-0509.1000e123

Copyright: © 2016 Bjørklund G, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Editorial

Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by pervasive deficits in social interaction, impairment in verbal and non-verbal communication, and stereotypical patterns of interests and activities. ASD can be extremely costly to society at large and the individuals and families involved, constituting one of the most perplexing challenges in child development and education.

The prevalence of children with ASD continues to increase all over the world. Current estimates in the US are one child in 45 has a diagnosis of ASD [1]. ASD has a multifactorial etiology involving interactions between genes, environment, and diet [2]. ASD is almost five times more common among boys than girls [3].

Mercury (Hg) is a neurotoxicant, and potentially one of the main environmental triggers for ASD [4]. Children are exposed to Hg via maternal amalgam fillings (as infants and later from the mother milk), thiomersal (an organomercury compound used as a vaccine preservative), compact fluorescent light bulbs (containing Hg), commercial and freshwater fish, industrial pollutants, etc.

Neuroinflammation, with increased levels of neurokinin A (a proinflammatory neuropeptide), is seen in some children with ASD, and may be caused by elevated blood-Hg levels. In fact, a recent study found a positive relationship between the Childhood Autism Rating Scale (CARS) scores and the levels of both serum neurokinin A and blood-Hg [4].

The original studies on the potential relationship between Hg and ASD has been investigated from 1999 to 2015 [5]. It was found that 86% of research papers with public health and/or industry affiliation reported no relationship between Hg and ASD. However, among studies without public health and/or industry affiliation, only 19% found no connection between Hg and ASD [5]. The discrepancy in these results suggests a bias indicative of a conflict of interest.

Research indicate that children with ASD appear to be at risk of zinc (Zn) deficiency, copper (Cu) toxicity, and often disturbed metallothionein (MT) system functioning [6-8]. Mercury accumulation may occur as a cause or consequence of MT dysfunction in ASD children, which may be one of the causes of Zn deficiency. Zinc and Cu are both antagonists in function, and essential for living cells. Therefore, it is important to monitor and follow the values for both trace elements together during Zn therapy [6-8].

There is growing evidence for a gut-brain connection in ASD. This suggests a potential benefit for digestive enzyme therapy for children with ASD. In a recent study, ASD children that were given digestive enzyme therapy for three months showed significant improvement in emotional response, general impression autistic score, general behavior, and gastrointestinal symptoms [9].

Glycosaminoglycans (GAGs) is a family of linear sulfated polysaccharides that are associated with central nervous system development, maintenance, and disorders in humans. Since GAGs can be somewhat modulated by diet, the role of GAGs levels were in a recent study compared in ASD children and normal controls [2]. It was found that the total GAG concentration were significantly higher in urine samples of ASD children than in the controls, and that a 90-day elimination diet (casein-free, carbohydrates, and multivitamin/mineral supplements) significantly reduced the urinary GAG levels in ASD children [2].

The relationship between vitamin D and ASD has been studied, and markedly lower vitamin D levels have been found in ASD children compared with healthy children [10]. In fact, the vitamin D levels had a significant negative correlation with CARS scores. Improved outcome was found in the CARS scores of the ASD children when taking 300 IU vitamin D3/kg/day (not to exceed 5000 IU/day) for three months [10].

Vested interests to the contrary and their political counterparts must join with independent researchers in finding ways to eliminate and/or reduce neurotoxic exposure to heavy metals, perchlorates, and other environmental and food toxins. Thiomersal should be totally banned for use in vaccines.

Nutrient therapy can be very potent and has minimal to no side effects, since no molecules foreign to the body are needed [2]. Nutritional deficiencies should be considered for all children so that they may develop optimally and thereby head off developmental delays.

Moreover, for all children exhibiting developmental disorders, we feel that safe, inexpensive oral chelating therapies can be instituted. Each case will require some level of clinical analysis to determine the best approach [11,12].

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