According to the researchers, encouraging better dietary habits may not just be beneficial to physical health in the long run but may also improve mental well-being in the shorter term.

While it's well-established that eating fruits and vegetables can benefit physical health. A recent study suggests that it may also benefit psychological well-being.

The research showed a positive association between the quantity of fruit and vegetables consumed and people's self-reported mental well-being.

Specifically, the findings indicate that eating just one extra portion of fruits and vegetables a day could have an equivalent effect on mental well-being as around 8 extra days of walking a month