Supplement School

Can vitamin D cause diarrhea? While uncommon, digestive symptoms may occur when vitamin D levels are too high or too low. Learn how vitamin D affects gut health, bowel movements, and what to consider when supplementing.

Can vitamin D cause constipation? While vitamin D is essential for bone and immune health, excessive supplementation may disrupt calcium balance and contribute to digestive discomfort. Here’s what research and clinical observations suggest.