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Nutrition, mood and behaviour: a review

  • Nerissa L Soh (a1), Garry Walter (a1) (a2), Louise Baur (a3) and Clare Collins (a4)
<span class='bold'>Objective:</span>

To conduct a critical review of recent empirical research regarding mood, behaviour and nutrition factors including essential fatty acids, macronutrients, micronutrients and food additives.

<span class='bold'>Method:</span>

A literature search of databases Medline, PsycInfo, CINAHL and Embase up to October 2008. The search emphasised empirical research published in the last 10 years and also included older literature. Studies in both adults and children were addressed.

<span class='bold'>Results:</span>

Research into omega-3 fatty acids has been substantial but evidence for their potential in treating mood and behaviour is modest. In comparison, there has been much less research into carbohydrate and protein intakes and little evidence for their ability to influence mood and behaviour. Recent trials with food additives suggest their removal from the diet may benefit susceptible children with hyperactivity disorders. Micronutrient supplementation appears to improve mood only in those who were initially deficient in micronutrients.

<span class='bold'>Conclusions:</span>

More stringent research designs such as longitudinal studies and the use of biologically inert placebos within randomised controlled trials are needed before supplemental use of omega-3 fatty acids to treat disorders of mood and behaviour can be recommended. Caution is advised regarding the indiscriminate use of diets free of artificial food additives in managing hyperactivity disorders, as they may place an undue burden on individuals and their families. Should omega-3 fatty acid supplementation or the elimination of certain food additives be established as effective, they may provide cost-effective, accessible and well-tolerated adjuncts to standard psychiatric treatments for mood and behavioural disturbances.

Corresponding author
Dr Nerissa L Soh, Coral Tree Family Service, PO Box 142, North Ryde, NSW 1670, Australia. Tel: +61 2 8877 5371; Fax: +61 2 9887 2941; E-mail:
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