Low intake of B-vitamins is associated with poor adolescent mental health and behaviour
2012
Abstract Objective The current prevalence of mental health problems in Western populations is approximately 20% and half of all adult mental health disorders are estimated to originate in adolescence. Diet plays an important role in modulating psychological wellbeing and B-vitamins are vital for the synthesis of neurotransmitters such as serotonin. We aimed to examine the relationship between B-group vitamins and adolescent mental health and behaviour. Methods This is a cross-sectional analysis of the West Australian Pregnancy Cohort (Raine) Study. The 17-year follow-up included collection of a food frequency questionnaire allowing B-vitamin intake calculation. Mental health was assessed using the Youth Self Report (YSR) which measures total, internalising (withdrawn/depressed) and externalising (aggressive/delinquent) behaviour scores. Multiple linear regression was used to analyse associations between B-vitamins and mental health with adjustment for relevant confounders ( n = 709). Results Lower intake of vitamins B1, B2, B3, B5, B6, and folate was associated with higher externalising behaviour scores ( p ≤ 0.05). Reduced intake of vitamin B6 and folate was associated with higher internalising behaviour scores ( p ≤ 0.05). Conclusions Poor nutrition may contribute to the pathogenesis of mental health problems in adolescence. The role of B-vitamins requires further investigation in randomised controlled trials.
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