A review of previous studies has found that diet can have a major effect on our mental as well as our physical health. Omega-3 fatty acids, found in oily fish, walnuts and kiwi fruit, helped learning and memory and helped fight against mental-health problems such as depression and mood disorders, schizophrenia and dementia while deficiencies in omega-3 led to an increased risk of attention-deficit disorder, schizophrenia, dyslexia, dementia, depression, bipolar disorder and schizophrenia. Children who were given increased amounts of omega-3 performed better in school, in reading and in spelling and had fewer behavioural problems. Folate deficiency was also found to lead to neurological disorders such as depression and cognitive impairment.
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