In a study that was published in the Journal of Nutritional Science (JNS), the effects of the fruit on a group of 54 healthy young male university students was monitored over six weeks, with one group consuming two kiwifruit per day and the other consuming half a kiwifruit daily.
Those with higher consumption experienced significantly less fatigue and depression than the other group, and felt they had more energy.
Scientists inferred this was likely related to the two kiwifruit dose optimizing vitamin C intake, as the sample group had a low fruit consumption beforehand.
The research used a gold variety of kiwifruit.
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 human body.
"Our study provides good evidence to support the view that there are measureable health benefits 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," she said in a release.
Vissers said vitamin C helped activate a number of enzymes in the body that enhanced the levels of metabolic energy and different neurochemicals in the brain.
The study was funded by the Ministry of Business, Innovation and Employment as well as the University of Otago and kiwifruit marketer Zespri International.