Ask a Doctor

James J. Perez, DO
5131 Beacon Hill Road
Suite 220 
Columbus, Ohio  43228
(614) 437-1230

Q: What causes morning sickness and what can be done about it?

A: Morning sickness probably results from rapidly rising serum (blood) levels of human chorionic gonadotropin (hCG), which is the hormone that makes the pregnancy test positive. This common symptom occurs in approximately 50% of pregnancies and is most marked at 2 to 12 weeks gestation. It is usually most severe in the morning but can occur at any time and may be precipitated by cooking odors and pungent smells. Emotional tension may play a role in the severity of the nausea and vomiting. Treatment for uncomplicated cases consists of eating light dry foods, small frequent meals and emotional support. Talk with your doctor about the morning sickness treatment that is best for you.

Extreme nausea and vomiting may be signs of multiple gestation (pregnancy with twins or more) or "molar" pregnancy (a rare situation in which a mass of abnormal tissue grows inside the uterus). Hospitalization may be necessary for IV hydration and medicine. Sometimes high doses of B6 and anti-nausea drugs are needed. Contact your doctor immediately if you have extreme nausea and vomiting.