Eating fruits, vegetables can improve mental health – Study – Punch Newspapers

Dayo Ojerinde

A team of researchers from Australia have found improvements in psychological well-being after increases in fruit and vegetable consumption.

The researchers, Cable News Network reported, conducted a study using more than 40,000 participants from the United Kingdom Household Longitudinal Study.

“Our analysis showed that increases in the consumption of fruit and vegetables are linked to increases in self-reported mental well-being and life satisfaction in data that spans a five-year period, even after accounting for other determinants of mental well-being such as physical health, income, and consumption of other foods.

“The benefits of physical activity for mental health are well established. The estimates from our work suggest that adding one portion to your diet per day could be as beneficial to mental well-being as going for a walk on an extra seven to eight days a month. One portion is equal to one cup of raw vegetables, half a cup of cooked vegetables or chopped fruit, or one piece of whole fruit. This result is encouraging as it means that one possible way to improve your mental health could be something as simple as eating an extra piece of fruit every day or having a salad with a meal,” the researchers wrote.

The authors of the study stressed that their findings alone could not reveal a causal link from fruit and vegetable consumption to increased psychological well-being, but they advised people to include vegetables in their daily diet.

 “People who eat more fruits and vegetables might just have less room in their diet for unhealthy foods. Although we accounted for bread and dairy in our study, ideally, future research should track all other foods consumed to rule out alternative explanations.

“But when taken in combination with other studies in this area, the evidence is encouraging. For example, a randomised trial conducted in New Zealand found that various measures of mental well-being, such as motivation and vitality, improved in a treatment group where young adults were asked to eat two extra portions of fruit and vegetables a day for two weeks, although no changes were found for depressive symptoms, anxiety or mood,” they added.

The co-author of the study, Dr Peter Howley, said there was a need for large trials to provide robust evidence that the link was causal.

“Randomised controlled trials are expensive. So another way to identify causation is to focus on the biological mechanisms that link the chemicals commonly found in fruit and vegetables to physical changes in the body. For example, vitamins C and E have been shown to lower inflammatory markers linked to depressive mood.

“Although more research is needed, our work adds weight to a growing body of evidence that eating fruits and vegetables and having higher levels of mental well-being are positively related, and the signs of a causal link from other recent studies are encouraging. We are not suggesting eating fruits and vegetables is a substitute for medical treatment, but a simple way to improve your mental health could be to add a little more fruit and vegetables to your daily diet,” Howley said.

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