Nav: Home

Raw fruit and vegetables provide better mental health outcomes: Otago research

April 15, 2018

Seeking the feel good factor? Go natural.

That is the simple message from University of Otago researchers who have discovered raw fruit and vegetables may be better for your mental health than cooked, canned and processed fruit and vegetables.

Dr Tamlin Conner, Psychology Senior Lecturer and lead author, says public health campaigns have historically focused on aspects of quantity for the consumption of fruit and vegetables (such as 5+ a day).

However, the study, just published in Frontiers in Psychology, found that for mental health in particular, it may also be important to consider the way in which produce was prepared and consumed.

"Our research has highlighted that the consumption of fruit and vegetables in their 'unmodified' state is more strongly associated with better mental health compared to cooked/canned/processed fruit and vegetables," she says.

Dr Conner believes this could be because the cooking and processing of fruit and vegetables has the potential to diminish nutrient levels.

"This likely limits the delivery of nutrients that are essential for optimal emotional functioning."

For the study, more than 400 young adults from New Zealand and the United States aged 18 to 25 were surveyed. This age group was chosen as young adults typically have the lowest fruit and vegetable consumption of all age groups and are at high risk for mental health disorders.

The group's typical consumption of raw versus cooked and processed fruits and vegetables were assessed, alongside their negative and positive mental health, and lifestyle and demographic variables that could affect the association between fruit and vegetable intake and mental health (such as exercise, sleep, unhealthy diet, chronic health conditions, socioeconomic status, ethnicity, and gender).

"Controlling for the covariates, raw fruit and vegetable consumption predicted lower levels of mental illness symptomology, such as depression, and improved levels of psychological wellbeing including positive mood, life satisfaction and flourishing. These mental health benefits were significantly reduced for cooked, canned, and processed fruits and vegetables.

"This research is increasingly vital as lifestyle approaches such as dietary change may provide an accessible, safe, and adjuvant approach to improving mental health," Dr Conner says.

* The top 10 raw foods related to better mental health were: carrots, bananas, apples, dark leafy greens such as spinach, grapefruit, lettuce, citrus fruits, fresh berries, cucumber, and kiwifruit.
-end-
Publication details:

Intake of raw fruits and vegetables is associated with better mental health than intake of processed fruits and vegetables

Kate L. Brookie, Georgia I. Best, and Tamlin S. Conner

https://www.frontiersin.org/articles/10.3389/fpsyg.2018.00487/full

Contact:

Dr Tamlin Conner
Department of Psychology
University of Otago
Ph +643 479 7624
Email tconner@psy.otago.ac.nz

University of Otago

Related Mental Health Articles:

Food insecurity can affect your mental health
Food insecurity (FI) affects nearly 795 million people worldwide. Although a complex phenomenon encompassing food availability, affordability, utilization, and even the social norms that define acceptable ways to acquire food, FI can affect people's health beyond its impact on nutrition.
Climate change's toll on mental health
When people think about climate change, they probably think first about its effects on the environment, and possibly on their physical health.
Quantifying nature's mental health benefits
The BioScience Talks podcast features discussions of topical issues related to the biological sciences.
Sexism may be harmful to men's mental health
Men who see themselves as playboys or as having power over women are more likely to have psychological problems than men who conform less to traditionally masculine norms, according to research published by the American Psychological Association.
Mental health matters
UCSB researchers study the effectiveness of an innovative program designed to help youth learn about mental health.
Could mental math boost emotional health?
Engaging the brain's dorsolateral prefrontal cortex (DL-PFC) while doing mental math may be connected with better emotional health, according to Duke researchers.
Program will train mental health providers, improve health care in rural Missouri
A new graduate education program at the University of Missouri has received nearly $700,000 from the Health Resources and Services Administration in the US Department of Health and Human Services to train psychology doctoral candidates in integrated, primary health care settings, in an effort to improve health care for underserved populations with mental health and physical disorders.
Loss of employer-based health insurance in early retirement affects mental, physical health
The loss of private health insurance from an employer can lead to poorer mental and physical health as older adults transition to early retirement, according to a study by Georgia State University.
Ocean views linked to better mental health
Here's another reason to start saving for that beach house: new research suggests that residents with a view of the water are less stressed.
New study shows electronic health records often capture incomplete mental health data
This study compares information available in a typical electronic health record (EHR) with data from insurance claims, focusing on diagnoses, visits, and hospital care for depression and bipolar disorder.

Related Mental Health Reading:

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Jumpstarting Creativity
Our greatest breakthroughs and triumphs have one thing in common: creativity. But how do you ignite it? And how do you rekindle it? This hour, TED speakers explore ideas on jumpstarting creativity. Guests include economist Tim Harford, producer Helen Marriage, artificial intelligence researcher Steve Engels, and behavioral scientist Marily Oppezzo.
Now Playing: Science for the People

#524 The Human Network
What does a network of humans look like and how does it work? How does information spread? How do decisions and opinions spread? What gets distorted as it moves through the network and why? This week we dig into the ins and outs of human networks with Matthew Jackson, Professor of Economics at Stanford University and author of the book "The Human Network: How Your Social Position Determines Your Power, Beliefs, and Behaviours".