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Can Plant Protein Powder cause diarrhea?

When used correctly, plant protein powder should not cause diarrhea unless you have a food intolerance. As most plant based protein powders are extremely hypoallergenic, it’s unlikely that a food intolerance or allergy would be the cause of any digestive issues or diarrhea. Diarrhea is however a possible side effect from lactose intolerance when consuming whey or casein protein powders. It can also present in some cases where excessive amounts of protein are being consumed, though this more often is found to cause constipation.

If you suffer from diarrhea after using a plant based protein, you should consider reducing your use or switching to an alternative source of protein to see if the symptoms abate.

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