An extra serving of fruit each day could have a place in the conversation about teenage mental health. A recent Australian study found that adolescents who ate more fruit had a lower risk of developing elevated symptoms of depression and anxiety over the following three years.
Published October 18, 2026, in Child and Adolescent Mental Health, the study involved 6,537 Australian adolescents, with an average starting age of about 12.6. Researchers collected surveys at the beginning of the study and at three annual follow-ups, tracking dietary habits alongside mental health symptoms. For each outcome, the analysis excluded teenagers who already met the relevant symptom threshold at the start.
The findings were encouraging: each additional daily serving of fruit was associated with a 13 percent lower relative risk of depression symptoms and a 7 percent lower relative risk of anxiety symptoms. Those figures describe differences in relative risk, rather than percentage-point reductions or guaranteed benefits for an individual teenager.
Researchers also found that higher consumption of sugary drinks was associated with greater risk of both outcomes. The analysis accounted for factors including physical activity, age, sex and socioeconomic status.
Still, the study cannot establish that fruit itself prevented mental health problems. Researchers observed eating habits rather than randomly assigning diets, and participants reported their own intake. Other differences between teenagers who ate more or less fruit could help explain the results. The outcomes also reflected thresholds on symptom questionnaires, rather than individual clinical diagnoses.
The researchers emphasized making nutritious food more affordable and accessible, including through schools and family environments. Their findings suggest that everyday nutrition deserves attention as one possible part of efforts to support young people’s mental health.
For families, this is an encouraging reason to make fruit an easy, available choice. It is not evidence that a teenager can eat their way out of depression or anxiety. The promise of this research lies in understanding how ordinary habits might contribute to mental wellbeing—and how communities can make those habits easier to sustain.
