Bone Health in Pregnancy

Women between the ages of 19 and 40 are needed for a study that looks at the effect of
calcium and vitamin D supplementation on bone health during pregnancy in black and white
women. Study subjects will be divided into three groups. Each group will take 2 study
supplements each day, the supplement will be calcium, vitamin D or placebo (a pill with
neither calcium nor vitamin D). The study involves five visits to the Children's Hospital of
Oakland Research Institute; each visit will be 1-2 hours in length. There are 3 study visits
during pregnancy and 2 in the first year after delivery. At each visit you will have your
blood drawn and be asked questions about what you eat and what type of activities you do. At
visit 16 and 36 weeks and 4 and 12 months postpartum you will have your bone density
measured. You will be paid $235 for completing the study.