Can whey protein powder cause constipation?

Whey protein powder typically does not cause constipation when consumed in appropriate amounts. However, excessive intake may lead to constipation. This may be related to an individual’s intestinal absorption capacity, gastric motility, and bowel habits. Individuals with weakened gastrointestinal function or reduced gastric motility are more prone to constipation after consuming whey protein powder. Moreover, excessive protein intake may increase the burden on the intestines and impair intestinal peristalsis, thereby contributing to constipation. To alleviate constipation associated with whey protein powder, the following measures are recommended: 1. Control the intake of whey protein powder and avoid overconsumption; 2. Increase dietary fiber intake—for example, by consuming fiber-rich foods such as celery, broccoli, spinach, and corn—to promote intestinal motility; 3. Maintain adequate fluid intake to help soften stools and reduce the risk of constipation.