During pregnancy, a woman's blood volume rises to 1.5 times its normal levels so she can supply her fetus with blood. That means increased blood pressure ... and with it, the potential for complications. And as we learn in the story ""Pregnancy-Induced Hypertension,"" women with high blood pressure, or who have a tendency to gain weight, need to be especially careful. This volume also contains the stories ""Allergies"" and ""Transfer.""
