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Study receives $31,800 of funding

Scientists look at connection between kiwifruit and sleep

A study examining the effects of green kiwifruit on sleep quality and the sleep-wake cycle in males has been awarded funding to the amount of $31,800. The work builds on previous research, which found that sleep quality improved with the consumption of two New Zealand-grown green kiwifruit every day for four weeks.

The research team will investigate whether the consumption of fresh green kiwifruit flesh will increase the urinary concentration of metabolites central in the regulation of sleep-wake cycles, and whether these effects are enhanced using a freeze-dried form of kiwifruit that includes the skin of the fruit.

Massey University senior lecturer Dr Sharon Henare: “We’re interested in identifying the mechanism by which kiwifruit may be acting to improve sleep and whether this involves an increase in the neurochemicals responsible for the regulation of sleep-wake cycles. The potential to use a natural product, such as having kiwifruit after dinner, appeals as a simple solution to improve sleep.”

According to, the project also aims to determine the effect of green kiwifruit on self-reported psychological wellbeing.

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