Key findings and recommendations include those for singleton and multi-fetal pregnancies regarding healthy eating; vitamin and mineral supplementation (folic acid, iron, calcium, vitamin D, iodine, vitamin A, omega-3 fatty acids); appropriate weight gain for singleton and multi-fetal pregnancies; the prevention and treatment of nausea and vomiting during pregnancy; the prevention and treatment of hypertension during pregnancy; the prevention of neural tube defects; food safety issues, such as