Are potatoes and starches constipating?

In some, yes: In some people, these can be constipating. Make sure you drink plenty of fluids if eating them.

No: if accompanied by fiber, starches will help promote a normal bowel movement. Fiber is found in whole grains, legumes, fresh fruits, and beans. In order for the fiber to be effective, you need plenty of fluids. Insoluble fiber is less constipating than soluble fiber in foods.Soluble fiber is found in oatmeal, insoluble fiber is the skin of the apple and it increases the bowel movement transit-