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PRISMA search strategy diagram. Full-text exclusions listed as having an inconsistent diet strategy contained confounding supplementation, nonketogenic diet (carbohydrate intake >50 g/d), or ketosis unconfirmed with βHB measurement, no mixed macronutrient control group, test diet lasting <14 d, or carbohydrate restoration. βHB, β-hydroxybuterate; PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses.
