This project proposal outlines a randomized-controlled trial (RCT) aimed at evaluating the effects of increased fruit and vegetable (F\&V) intake on cognitive performance, attention, and mood in Chinese children aged 7-11 years. The increased F\&V intake will be achieved by providing a daily healthy breakfast including at least one piece of fruits and one piece of vegetables. The RCT includes a 2-week Lead-In term, 12 week Intervention term and 4-6 week Washout/Follow-Up term, targeting 250 children from the selected schools in Shanghai. The primary objective is to measure cognitive improvement using the Wechsler Intelligence Scale for Children (WISC-IV), while secondary outcomes will assess mood, attention, biomarkers, behavioral changes in dietary choices and the mechanism. The results of this trial may provide critical evidence on the benefits of F\&V consumption in children.
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Change in Cognitive Performance
Timeframe: the end of Week 2 (Baseline), Week 14 (end of intervention), and Week 18-20 (post-washout).