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The search for a novel prophylactic agent against malaria is on the rise due to the negative socio-economic impact of the disease in tropical and subtropical regions of the world. Sequel to this, we evaluated the in vivo anti-Plasmodium berghei activity of a high-carbohydrate diet as well as the effects of the diet on parasite-associated anemia and organ damage. Mice were fed with either standard or a high-carbohydrate diet for 4 weeks and subsequently infected with chloroquine-sensitive strain of P. berghei. The levels of parasitemia, blood glucose, packed cell volume, and redox sensitive biomarkers of brain and liver tissues were measured. Data from this study showed that high-carbohydrate significantly (p 0.05) aggravated the multiplication of P. berghei in the animals. Furthermore, our result demonstrated that blood glucose level in P. berghei-infected mice fed with a high-carbohydrate diet was insignificantly (p 0.05) depleted. Additionally, our findings revealed that high-carbohydrate did not demonstrate a significant (p 0.05) ameliorative potentials against P. berghei-induced anemia and oxidative stress in the brain and liver tissues. We concluded that high-carbohydrate diet was unable to suppress P. berghei upsurge and accordingly could not mitigate certain pathological alterations induced by P. berghei infection.