Fruit and Veg Give You the Feel-Good Factor
University of Warwick research indicates that eating more fruit and vegetables can substantially increase people's happiness levels.
Published in the American Journal of Public Health, the study is one of the first major scientific attempts to explore psychological well-being beyond the traditional finding that fruit and vegetables can reduce risk of cancer and heart attacks.
Happiness benefits were detected for each extra daily portion of fruit and vegetables up to 8 portions per day.
The researchers concluded that people who changed from almost no fruit and veg to eight portions of fruit and veg a day would experience an increase in life satisfaction equivalent to moving from unemployment to employment.
Benefits Come Sooner
The study followed more than 12,000 randomly selected people. These subjects kept food diaries and had their psychological well-being measured.
The authors found large positive psychological benefits within two years of an improved diet.
Professor Andrew Oswald said: "Eating fruit and vegetables apparently boosts our happiness far more quickly than it improves human health.
People's motivation to eat healthy food is weakened by the fact that physical-health benefits, such as protecting against cancer, accrue decades later. However, well-being improvements from increased consumption of fruit and vegetables are closer to immediate."
The work is a collaboration between the University of Warwick and the University of Queensland.
The researchers found that happiness increased incrementally for each extra daily portion of fruit and vegetables up to eight portions per day.
The study involved an examination of longitudinal food diaries of 12,385 randomly sampled Australian adults over 2007, 2009, and 2013 in the Household, Income, and Labour Dynamics in Australia Survey. The authors adjusted the effects on incident changes in happiness and life satisfaction for people's changing incomes and personal circumstances.
Could Motivate People
The study has important implications, particularly in the developed world where the typical citizen eats an unhealthy diet. The findings could be used by health professionals to persuade people to consume more fruits and vegetables.
Dr Redzo Mujcic, research fellow at the University of Queensland, said: "Perhaps our results will be more effective than traditional messages in convincing people to have a healthy diet. There is a psychological payoff now from fruit and vegetables -- not just a lower health risk decades later."
The authors found that alterations in fruit and vegetable intake were predictive of later alterations in happiness and satisfaction with life. They took into account many other influences, including changes in people's incomes and life circumstances.
Possible Link with Antioxidants
The academics think it may be possible eventually to link this study to current research into antioxidants which suggests a connection between optimism and carotenoid in the blood. However they argue that further research is needed in this area.
This is a really helpful piece of research, especially for those of us who aren't really motivated to make sure we get enough.
But we all like to 'feel better', so maybe this will provide a bit of a spur to make sure we give our bodies their fair share.
Including lots of fruit and veg in your diet also really heps with weight loss, high in fibre and low in calories as most fruits and veggies are.
Tracking your daily consumption is very motivating, and a great way to focus on increasing your intake. You can do this in the WLR Food Diary - take a free trial
Follow the links below for more ideas about fruit and veg.
WLR's tools make it easy to follow a diet that maximises fruit and vegetables - and healthy, clean eating. You can follow one of our plans or devise your own, best of all you can try it free
New research suggests up to 8-a-day can make you happier University of Warwick