The Effect of Energy Drinks on Mental Well-Being
There has been wide discourse on the effect of caffeine on mental well-being for decades. In recent years, several kinds of energy drinks have grown in popularity. Marketed with bright colors and health benefits, such as added probiotics or protein, these products have attracted a larger audience of consumers. Energy drinks are targeted particularly toward young consumers. Despite being marketed as mental and physical energy boosters, their caffeine content can be incredibly high, with the potential to cause caffeine intoxication (Richards & Smith, 2016).
Despite concerns about the effects of energy drinks, research on their association with mental well-being was limited at the time of the study. Trapp and colleagues explored this association by measuring depression, anxiety, and stress using the Depression Anxiety Stress Scale-21 (DASS-21; Trapp et al., 2014). The study used data from a follow-up of the Raine Study, which originally recruited participants between 1989 and 1991. Conducted between 2009 and 2011, the follow-up included 1,062 young Australian adults with a mean age of 20 years.

The original Raine cohort came from the Western Australian Pregnancy Cohort Study, which included 2,900 pregnant women. Researchers followed the women and their children, tracking the children into early adulthood. The findings of the energy drink study were based on consumption and mental health data from 1,062 participants at the 20-year follow-up.
Energy drink consumption was measured through self-report questionnaires. Participants answered questions about how often they consumed energy drinks and the number of cans they drank. These responses were then converted into a milliliters-per-day variable. Participants’ mental health was measured using the DASS-21, a self-report questionnaire assessing depression, anxiety, and stress over the previous week. The researchers also accounted for other factors that could affect the results, including socioeconomic status, sex, alcohol consumption, diet, physical activity, body mass index, and drug use.
Results showed that 62% of participants consumed energy drinks monthly or less frequently. Males reported consuming more energy drinks than females in both quantity and frequency. Energy drink consumption was associated with anxiety in males only. Males who consumed 250 mL or more per day had significantly higher anxiety and stress scores than those who did not consume energy drinks. The same pattern was not found among females, and there were no significant associations between energy drink consumption and the mental health outcomes measured in females.
The researchers suggested that caffeine and other stimulating ingredients in energy drinks may contribute to anxiety symptoms. They also considered the possibility that people already experiencing anxiety might use energy drinks as a form of self-medication. Because the study measured an association, it could not establish whether energy drink consumption caused these symptoms or whether existing symptoms influenced consumption.

These results are important because they helped address a gap in research on energy drink consumption and mental well-being. The study included a large group of young adults, who make up a substantial portion of the audience for energy drinks. This made the findings particularly relevant to young consumers, although the results may not apply equally to all populations.
The association between energy drink intake and anxiety can serve as a reminder for young adults to pay attention to how much they consume and how it may relate to their well-being. In particular, the higher anxiety and stress scores among males who consumed 250 mL or more per day raise concerns about frequent consumption. However, this amount should not be interpreted as a cutoff at which energy drinks necessarily become harmful.
The findings also raise questions about the marketing of energy drinks to younger audiences, including minors, although the study focused on young adults rather than children. While energy drinks may provide temporary boosts of energy during intense periods, such as exam season, consumers should consider other ways to maintain their energy and support their mental well-being over time.
Author:
Kaylan Son, Psychology Major, Emory University
Editor:
Mary Yeboah, Emory University
Articles Reviewed:
Richards, G., & Smith, A. P. (2016). A review of energy drinks and mental health, with a focus on stress, anxiety, and depression. Journal of Caffeine Research, 6(2), 49–63. https://doi.org/10.1089/jcr.2015.0033
Trapp, G. S. A., Allen, K., O'Sullivan, T. A., Robinson, M., Jacoby, P., & Oddy, W. H. (2014). Energy drink consumption is associated with anxiety in Australian young adult males. Depression and Anxiety, 31(5), 420–428. https://doi.org/10.1002/da.22175










