One of the risk factors for hyperemesis gravidarum includes?

Hyperemesis gravidarum is a severe form of nausea and vomiting during pregnancy that can lead to dehydration and nutritional deficiencies. The correct answer identifies multiple pregnancies as a significant risk factor. Women who are carrying twins or more face a higher likelihood of experiencing hyperemesis gravidarum due to the increased hormonal levels and physical stress on the body.

In cases of multiple pregnancies, the body produces elevated levels of hormones, such as human chorionic gonadotropin (hCG) and estrogen, which can exacerbate nausea and vomiting. This heightened hormonal response can lead to more severe symptoms compared to single pregnancies.

Other options, such as a single pregnancy, low body mass index, and advanced maternal age, do not have the same level of association with hyperemesis gravidarum. While individual factors like low body mass index or advanced maternal age may play a role in overall pregnancy risks, they are not primary predictors of hyperemesis gravidarum as is the case with multiple pregnancies.