Kiwifruit daily can improve mood and energy

August 23, 2013

Eating two kiwifruit a day can improve a person's mood and give them extra energy, new research from the University of Otago, Christchurch (UOC) shows.

Over a six-week period, normally-healthy young men either ate two kiwifruit a day or half a kiwifruit daily as part of a research study into the potential mood-enhancing effects of the fruit.

Researchers found those eating two kiwifruit daily experienced significantly less and depression than the other group. They also felt they had more energy. These changes appeared to be related to the optimising of C intake with the two kiwifruit dose. Kiwifruit are an exceptional source of vitamin C.

The findings were published recently in the Journal of Nutritional Science. The study was carried out with 54 young male who generally eat little fresh fruit and whose vitamin C levels are lower than desirable due to this.

Professor Margreet Vissers and her team from the UOC's Centre for Free Radical Research are involved in a large on-going study to better understand the critical role of vitamin C in the .

Professor Vissers says "the two kiwifruit per day ensured that the study group's vitamin C levels were optimal, and this was needed to see an effect on mood and energy. The amount of vitamin C required for this is higher than the current recommended intake. Our study provides good evidence to support the view that there are measureable to be obtained from eating a good amount of fruit and vegetables daily. For best benefit, it is important to include high vitamin C foods in your daily diet."

Vitamin C helps activate a number of enzymes in the body that enhance the levels of and different neurochemicals in the brain, Professor Vissers says. This means taking in more vitamin C could decrease feelings of fatigue and increase physical and mental energy.

This work was funded by the Ministry of Business, Innovation and Employment as well as the University of Otago and Zespri International.

Explore further: Better to eat kiwifruit than to take vitamin C supplements

Related Stories

New research into optimising our levels of vitamin C

March 4, 2013

(Medical Xpress)—A daily vitamin C intake equivalent to eating two kiwifruit a day is required to ensure our muscles maintain optimal levels, researchers from the University of Otago, Christchurch have found.

Excess vitamin E intake not a health concern, study says

April 15, 2013

Despite concerns that have been expressed about possible health risks from high intake of vitamin E, a new review concludes that biological mechanisms exist to routinely eliminate excess levels of the vitamin, and they make ...

Vitamin C does not lower uric acid levels in gout patients

May 16, 2013

Despite previous studies touting its benefit in moderating gout risk, new research reveals that vitamin C, also known ascorbic acid, does not reduce uric acid (urate) levels to a clinically significant degree in patients ...

Who benefits from vitamin D?

August 13, 2013

Studying the expression of genes that are dependent on vitamin D makes it possible to identify individuals who will benefit from vitamin D supplementation, shows a University of Eastern Finland study published recently in ...

Recommended for you

Older people getting smarter, but not fitter

August 31, 2015

Older populations are scoring better on cognitive tests than people of the same age did in the past —a trend that could be linked to higher education rates and increased use of technology in our daily lives, say IIASA population ...

Higher intelligence score means better physical performance

August 14, 2015

New research reveals a distinct association between male intelligence in early adulthood and their subsequent midlife physical performance. The higher intelligence score, the better physical performance, the study reveals. ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.