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the claim
Protein powder increases blood sugar levels in healthy adults.
the verdict
INSUFFICIENT LEANING
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0 sources for · 3 against
Is it true that protein powder increases blood sugar levels in healthy adults?
Unclear. The retrieved evidence does not directly test whether protein powder raises blood sugar in healthy adults. One small study found whey hydrolysates lowered glucose in six healthy adults, and a review notes protein supplements were associated with lower postprandial glucose in diabetic subjects, but neither settles the claim for healthy adults generally.
Verdict: PARTIAL LEAN · 0 sources for, 3 against · Last checked
Evidence against · 3
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Whey protein: The “whey” forward for treatment of type 2 diabetes? - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.4239/wjd.v6.i14.1274
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More against · 2
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Lifshitz, Y., Saban, R., Paz, S., Paz, K. G., Samish, I., Jenkins, A. L., Zeltser, D., & Eldor, R. (2026). sweelin®, a novel sweet protein, does not affect blood glucose and insulin levels - a double-blind, crossover, randomized study.. doi.org. https://doi.org/10.1016/j.foodchem.2026.149790
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Patel, V., Aggarwal, K., Dhawan, A., Singh, B., Shah, P., Sawhney, A., & Jain, R. (2024). Protein supplementation: the double-edged sword.. doi.org. https://doi.org/10.1080/08998280.2023.2280417
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