Does severe morning sickness indicate a smarter baby?
Generally speaking, more severe pregnancy symptoms do not indicate that the baby will be smarter. If you experience discomfort, it is advisable to seek medical attention promptly. A detailed explanation follows:

The severity of pregnancy symptoms—such as nausea and vomiting—is determined by hormonal fluctuations, individual gastrointestinal tolerance, and constitutional differences; it bears no relationship to fetal brain development. During pregnancy, estrogen, progesterone, and human chorionic gonadotropin (hCG) levels rise rapidly. In individuals with heightened sensitivity, the gastrointestinal tract is more strongly stimulated, leading to intensified nausea and vomiting. Conversely, some pregnant women possess excellent gastrointestinal tolerance, rendering them relatively unaffected by hormonal changes—experiencing only mild nausea or no symptoms at all. Fetal cognitive development depends primarily on genetic factors, maternal nutritional absorption during pregnancy, and the intrauterine environment—not on the intensity of pregnancy symptoms. In rare cases, severe pregnancy symptoms may prevent adequate food intake, resulting in maternal malnutrition, which can adversely affect normal fetal development.
Adjust your daily routine and diet according to your body’s signals: eat smaller, more frequent meals throughout the day, and choose bland, easily digestible foods. Upon waking, consume a small amount of soda crackers to alleviate nausea, and avoid greasy or pungent-smelling foods. Take gentle walks during leisure time to soothe your digestive system, maintain a calm and stable emotional state, and consult a healthcare provider promptly if persistent vomiting prevents adequate nutrition intake.