Omega-3 fettsyrer for autismespekterforstyrrelser (ASD)

Omega-3 fatty acids supplementation for autism spectrum disorders (ASD)

Forfattere
James, S. Montgomery, P. Williams, K.
Årstall
2011
Tidsskrift
Cochrane Database of Systematic Reviews
Volum
Sider
Background: It has been suggested that impairments associated with autism spectrum disorders (ASD) may be partially explained by deficits of omega-3 fatty acids, and that supplementation of these essential fatty acids may lead to improvement of symptoms. Objectives: To review the efficacy of omega-3 fatty acids for improving core features of ASD (for example, social interaction, communication, and stereotypies) and associated symptoms.  Search methods: We searched the following databases on 2 June 2010: CENTRAL (2010, Issue 2), MEDLINE (1950 to May Week 3 2010), EMBASE (1980 to 2010 Week 21), PsycINFO (1806 to current), BIOSIS (1985 to current), CINAHL (1982 to current), Science Citation Index (1970 to current), Social Science Citation Index (1970 to current), metaRegister of Controlled Trials (20 November 2008) and ClinicalTrials.gov (10 December 2010). Dissertation Abstracts International was searched on 10 December 2008, but was no longer available to the authors or editorial base in 2010. Selection criteria: All randomised controlled trials of omega-3 fatty acids supplementation compared to placebo in individuals with ASD.Data collection and analysis: Three authors independently selected studies, assessed them for risk of bias and extracted relevant data. We conducted meta-analysis of the included studies for three primary outcomes (social interaction, communication, and stereotypy) and one secondary outcome (hyperactivity). Main results: We included two trials with a total of 37 children diagnosed with ASD who were randomised into groups that received either omega-3 fatty acids supplementation or a placebo. We excluded six trials because they were either non-randomised controlled trials, did not contain a control group, or the control group did not receive a placebo. Overall, there was no evidence that omega-3 supplements had an effect on social interaction (mean difference (MD) 0.82, 95% confidence interval (CI) -2.84 to 4.48, I2 = 0%), communication (MD 0.62, 95% CI -0.89 to 2.14, I2 = 0%), stereotypy (MD 0.77, 95% CI -0.69 to 2.22, I2 = 8%), or hyperactivity (MD 3.46, 95% CI -0.79 to 7.70, I2 = 0%). Authors' conclusions: To date there is no high quality evidence that omega-3 fatty acids supplementation is effective for improving core and associated symptoms of ASD. Given the paucity of rigorous studies in this area, there is a need for large well-conducted randomised controlled trials that examine both high and low functioning individuals with ASD, and that have longer follow-up periods.

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Tiltaksnivå

Behandling og hjelpetiltak

Tema

Psykiske vansker og lidelser

Autismespekter

Tiltak

Alternativ behandling

Kosttilskudd og ernæring

Aldersgruppe

Barn i skolealder (6-12 år)

Ungdom (13-18 år)

Egenskaper

Cochrane-oversikter

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