Hyperemesis Gravidarum (Morning Sickness X’s 100) Tara Carpenter, NC, CPES. Nutrition Consultant for people on Body Ecology Diet & Certified Placenta Encapsulation Specialist for new mothers in Vermont. Originally published on February 24, 2017. Hyperemesis gravidarum (HG) is a rare, serious condition affecting 0.5–2.0% of pregnant women and when broken down means hyper=over-excessive/severe, emesis=vomiting, gravidarum=pregnancy; […]