Research Studies
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February 9, 2024

Kiwifruit Enhances Mood in Young Adults: Survey Reveals

Written By
Medically Reviewed by
Dr. Jeannie Achuff ND
Updated On
January 14, 2025

Sometimes, when we feel a bit low, we grab a snack to cheer ourselves up. Remarkably, picking the right snack, like a kiwifruit, may help support a positive mood. Researchers have discovered that young people who don't get enough vitamin C might feel happier when they eat kiwifruit. 

The KiwiC for Vitality study describes how important the food we eat can be for our feelings. The researchers used smartphones to check people's moods and found that something as simple as eating a kiwifruit can make a real difference in how cheerful we feel. 

It's a perfect example of how blending the natural benefits of foods like kiwifruit with cutting-edge technology can offer tangible ways to support our mood and overall quality of life. So, what we eat doesn't just affect our health; it can also make our day a little brighter.

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The Power of Kiwifruit in Supporting Mood

Imagine feeling brighter and more vibrant within a few days of making a minor dietary tweak. The researchers found this when participants who initially had lower levels of vitamin C began supplementing their diets with either vitamin C tablets or two SunGold™ kiwi fruits daily. 

The research utilized smartphone surveys to collect data from participants over an 8-week period, including a 14-day lead-in, 28-day intervention, and 14-day washout phase. Participants were divided into three groups: those receiving vitamin C supplements, those consuming kiwifruit, and those given a placebo.

Remarkably, those who opted for kiwifruits started to notice improvements in their vitality and overall mood as early as four days into the intervention, with the peak of these benefits observed around two weeks. This finding highlights the rapid impact that nutrient-rich foods can have on our psychological well-being and suggests that the way to a happier self could lie in our kitchen fruit bowls.

Harnessing Technology to Track Mood Changes

The role of technology in this study cannot be overstated. By employing intensive longitudinal smartphone surveys, the researchers gathered data on mood-related changes with unprecedented detail and accuracy. 

This innovative approach allowed for a real-time glimpse into the participants' daily mood fluctuations, providing a rich and nuanced understanding of how dietary interventions can affect our emotional well-being.

Whole Foods vs. Supplements

Beyond the numbers and data, this research illuminates the difference between consuming whole foods and supplements. While vitamin C tablets did offer some mood support, kiwifruits—laden with a synergistic mix of nutrients—had a more pronounced and rapid effect. 

This finding highlights the broader benefits of integrating whole foods into our diets, not just for their nutritional value but for their potential to uplift our spirits.

Dietary Choices: A Natural Strategy for Mental Well-Being

This study is particularly intriguing because it focuses on the everyday, accessible changes one can make to potentially support mood. It's not just about vitamin C; it's about how integrating whole foods like kiwifruit into our diets can offer more than just nutritional benefits—they can also be a source of psychological uplift. 

The study goes beyond the tablets to show that the whole fruit, with its synergistic blend of nutrients, offers a more pronounced and rapid mood support compared to vitamin C supplements alone.

This research provides a compelling narrative for individuals looking for natural ways to support their mood or for practitioners seeking to recommend effective, non-pharmaceutical interventions to their patients. It suggests that simple dietary adjustments, such as incorporating vitamin C-rich kiwifruit into daily meals, can be helpful tools in our quest for better mental health.

Enhancing Nutritional Research Through Advanced Diagnostic Testing

In complementing the findings of this research, advanced diagnostic techniques, such as the Vitamin C test by Access Medical Laboratories and the SpectraCell Micronutrients Test Panel, play a pivotal role in identifying individuals with suboptimal vitamin C levels. These precise testing methods are integral for accurately selecting participants for dietary intervention studies. 

By measuring vitamin C levels before and after the intervention, these diagnostic tools can offer tangible proof of the dietary changes' impact, demonstrating the direct benefits on participants' vitamin C levels.

Implications for Dietary Recommendations

The results from this study have substantial implications for dietary guidelines and mental health interventions. They suggest incorporating vitamin C-rich foods like kiwifruit into the diet, which could offer a simple, natural, and effective way to support mood and overall psychological well-being. 

This is particularly relevant for young adults, the demographic this research focuses on, who may be susceptible to mood fluctuations due to various lifestyle and academic pressures.

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Conclusion: Embracing Nutrition for Emotional Well-Being

The KiwiC for Vitality trial transcends its primary findings to offer a fresh perspective on the convergence of nutrition and technology in mental health. It reaffirms that our dietary choices have profound implications for our moods, offering simple yet impactful ways to support our mental well-being. As we continue to unravel the complex relationship between diet and mood, this study serves as a reminder of the powerful, positive changes that can stem from the food we consume.

The information in this article is designed for educational purposes only and is not intended to be a substitute for informed medical advice or care. This information should not be used to diagnose or treat any health problems or illnesses without consulting a doctor. Consult with a health care practitioner before relying on any information in this article or on this website.

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Lab Tests in This Article

Cloyd, Jamie. “The Role of Nutrition in Managing Depression: Foods That Boost Mood.” Rupa Health, 17 Oct. 2023, www.rupahealth.com/post/the-role-of-nutrition-in-managing-depression-foods-that-boost-mood.

Fletcher, B. D., Haszard, J. J., Vissers, M., & Conner, T. S. (2023). Smartphone survey data reveals the timecourse of changes in mood outcomes following vitamin C or kiwifruit intervention in adults with low vitamin C. British Journal of Nutrition, 1–31. https://doi.org/10.1017/s0007114523002787

Kresge, Kate. “An Integrative Approach to Mental Health.” Rupa Health, 31 Jan. 2023, www.rupahealth.com/post/an-integrative-approach-to-mental-health.

Micronutrient Test by SpectraCell Laboratories. (n.d.). Rupa Health. Retrieved February 6, 2024, from https://www.rupahealth.com/lab-tests/spectracell-micronutrient-test

Sweetnich, J. (2023, May 9). How to make sure your patients are getting enough vitamin C in their diet: Understanding testing, rdas, and the benefits of supplementation. Rupa Health. https://www.rupahealth.com/post/vitamin-c-101

Sweetnich, Jerrica. “Top 5 Antioxidants That Can Improve Your Health and How to Test Your Patient’s Levels.” Rupa Health, 30 June 2023, www.rupahealth.com/post/top-5-antioxidants-to-improve-your-health.

Vitamin C by Access Med Labs. (n.d.). Rupa Health. Retrieved February 6, 2024, from https://www.rupahealth.com/lab-tests/access-medical-labs-vitamin-c

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