Alarming Link Revealed: Sugary Drinks and Teen Anxiety
Published: Sunday, March 01, 2026
Here’s a startling fact: Anxiety disorders that start in the teenage years often persist into adulthood, creating a lifelong struggle for millions. With an estimated one in five teenagers affected by anxiety (https://doi.org/10.1016/j.brat.2023.104376), it’s a growing concern that impacts their social lives, academic performance, and overall well-being (https://doi.org/10.1016/j.jaac.2013.09.017). But here’s where it gets controversial: Could something as common as sugary drinks be contributing to this mental health crisis?
We’ve long known that biological, genetic, and environmental factors play a role in anxiety (https://doi.org/10.1007/s00787-020-01669-3). But emerging research suggests diet might be a bigger player than we thought. Specifically, diets high in free sugars—those added to foods and drinks or naturally present in honey, syrups, and fruit juices—have been linked to poorer mental health in adolescents (https://doi.org/10.1016/j.jad.2024.01.101).
And this is the part most people miss: Teenagers consume more free sugar than any other age group, sometimes up to 20% of their daily energy intake (https://doi.org/10.1111/jhn.12338), with sugary drinks being a major culprit (https://doi.org/10.1093/nutrit/nuaa070). UK guidelines recommend limiting free sugars to just 5% of daily calories (https://www.gov.uk/government/publications/sacn-carbohydrates-and-health-report), but many teens are far exceeding this.
In a groundbreaking study, my colleagues and I analyzed data from multiple research papers published between 2000 and 2025, focusing on the link between sugary drink consumption and anxiety in teenagers (https://doi.org/10.1111/jhn.70217). The findings? Seven out of nine studies showed a clear connection: Teens who consumed high amounts of sugary drinks had a 34% higher likelihood of being diagnosed with an anxiety disorder.
But before you jump to conclusions, it’s important to note that these studies were observational. They highlight a pattern, but they don’t prove causation. It’s possible, for instance, that anxious teens are more likely to reach for sugary drinks as a coping mechanism. What do you think? Is it the drinks causing anxiety, or is anxiety driving the craving for sugar? Let’s discuss in the comments!
Another fascinating angle is the gut-brain axis, the intricate network linking your gut and brain. Sugary drinks could disrupt gut health, which in turn might influence mental health (https://doi.org/10.1007/s11920-019-1075-3). However, factors like overall diet, stress, and sleep also play a role in both gut health and anxiety, making this a complex puzzle.
So, what can we do? Our study suggests that reducing sugary drink intake could be a simple yet effective way to support teen mental health. While research has already shown the physical health benefits of cutting back on sugary drinks (https://doi.org/10.1093/nutrit/nux061), we urgently need more studies to explore their impact on mental well-being.
Practical Tips to Cut Down on Sugary Drinks:
- Swap fizzy drinks for sparkling water with a slice of lemon, cucumber, berries, or mint for natural flavor.
- Replace sugary beverages with water, milk, or sugar-free alternatives.
- Opt for low-calorie, artificially sweetened drinks in moderation.
- Replace energy drinks, which can harm sleep and academic performance (https://doi.org/10.1093/nutrit/nux061), with lower-caffeine options like tea or coffee.
UK dietary guidelines recommend no more than 30 grams of sugar per day (about seven teaspoons) for adolescents and adults (https://www.nhs.uk/live-well/eat-well/food-types/how-does-sugar-in-our-diet-affect-our-health/). Considering a single can of soda can contain 35 grams of sugar, cutting back on these drinks is a no-brainer.
As concerns about teen anxiety grow, it’s clear that lifestyle changes, like reducing sugar intake, could be a powerful tool in protecting their mental health. While we’re still unraveling the exact relationship between sugary drinks and anxiety, this research is a call to action. What changes are you willing to make to support the mental well-being of the teens in your life? Share your thoughts below!
By Chloe Casey, Lecturer in Nutrition and Behaviour, Bournemouth University
