The combined impact of diet, physical activity, sleep and screen time on academic achievement: a prospective study of elementary school students in Nova Scotia, Canada.

Body weight status did not have an association with any outcome in these models. When considering all lifestyle behaviors simultaneously, only meeting recommendations for milk and alternatives, and meat and alternatives remained significantly associated with meeting expectations for mathematics; meeting recommendations for free sugars was borderline significant (Table 2 , Model 2: OR: 1.20 [95% CI: 0.99, 1.45]).

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