Adults who drank a daily glass of 100% fruit juice or a smoothie while increasing their intake of fruits and vegetables reported depression scores 2.52 points lower on a 27-point scale than a control group in a four-week randomized controlled trial, according to results published Aug. 9, 2026 in the British Journal of Nutrition. The trial included 42 adults who ate two or fewer portions of fruit and vegetables per day at baseline, and it was funded by the Fruit Juice Science Center, researchers said. [1]
The study was conducted at Newcastle University and was peer-reviewed, according to the university. The findings add to a body of research linking dietary patterns to mental well-being, with experts advocating a balanced, whole-food approach, according to recent reports. [2]
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