What Causes Nausea in the Third Trimester of Pregnancy?

　　The late stage of pregnancy is an exciting time for expectant mothers as they prepare to welcome their newborns. However, many women still experience nausea during this period, causing significant discomfort and distress. So, what causes nausea in the third trimester?

　　What Causes Nausea in the Third Trimester?

　　Nausea during the third trimester may result from uterine enlargement compressing the gastrointestinal tract, thereby weakening gastric motility and causing food to stagnate in the stomach—leading to nausea and vomiting. Additionally, consuming spicy, greasy, or highly stimulating foods in late pregnancy can further impair gastrointestinal function and trigger nausea and vomiting. Women with pre-existing gastrointestinal disorders are also more prone to nausea and vomiting. Therefore, if severe nausea and vomiting occur during the third trimester, prompt medical evaluation and treatment at a hospital are essential.

　　Calcium supplementation is especially important during the third trimester. During both the first and third trimesters, fetal bones and teeth begin developing, and overall fetal growth accelerates significantly—increasing calcium requirements. Thus, nutritional intake during the third trimester must be adequate and well-balanced, as the baby’s nutritional needs become increasingly comprehensive for healthy development. In daily meals, pregnant women should consume calcium-rich foods such as bone broth, shrimp skin soup, eggs, kelp, sesame seeds, and animal liver—all of which support optimal fetal development during late pregnancy.

　　Expectant mothers in the third trimester should engage in appropriate physical activity, prioritize rest, and consume ample fresh vegetables and fruits. Any persistent physical discomfort warrants timely medical consultation and treatment. We hope this information proves helpful to you.