Level 1: Why are pregnant women prone to constipation? Constipation is a very common phenomenon in pregnant women, which is caused by changes in hormonal levels during pregnancy, as well as the enlargement and compression of the intestines. In addition, pregnant women may reduce the amount of exercise due to concerns about the safety of their fetuses, and their diet may not be balanced, which will affect intestinal function. Level 2: How to relieve constipation