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A review of studies found pescatarians who eat lots of plant-based foods are less likely to develop mental-health condition. There is a relationship between the quality of diet and mental health. Eating a Mediterranean diet with plenty of fish, fruit, vegetables and nuts lowers a risk of depression. Mediterranean diets, also rich in olive oil, lentils and red wine are thought to lower inflammation, which is good for mental health.
The University College London researchers analysed 41 studies that investigated the link between diet and depression. Four of the studies specifically assessed the association between a traditional Mediterranean diet and depression in a total of 36,556 adults. Results suggest those who strictly follow a Mediterranean diet are 33 per cent less likely to suffer from depression than those who did not.
The scientists also looked at five studies investigating the link between a poor diet and depression in 32,908 adults from France, Australia, Spain, the US and the UK. They discovered that eating lots of inflammatory food like saturated fat, sugar and processed food increases the risk of depression.
Pro-inflammatory diet can induce systemic inflammation, and this can directly increase the risk for depression. The relationship between the gut and brain plays a key role in mental health that this axis is modulated by gastrointestinal bacteria, which can be modified by diet.