What is the most effective laxative for pregnant women? During pregnancy, pregnant women are prone to constipation due to endocrine changes and the pressure of the fetus on the body. Long-term constipation will not only cause discomfort to the pregnant mother, but also affect the health of the fetus. Therefore, pregnant women need a reasonable diet and correct eating habits to effectively relieve constipation. This article discusses fruits, vegetables, grains and dietary fiber.