1. Why are pregnant women prone to constipation? Constipation is a very common problem among pregnant women. The main reason is that changes in hormonal levels during pregnancy and an increase in intestinal peristalsis slow down intestinal peristalsis and prolong the residence time of food in the digestive tract, causing the feces to become dry and hard. In addition, pregnant women also need to pay attention to diet and exercise issues. 2. How to prevent constipation in pregnant women? 1.