Proper prenatal care contributes to healthier babies and mothers. Though access has been improving, minority women were twice as likely as white women to get prenatal care only in the third trimester, or not at all. Mothers who delay or forgo prenatal care are three times more likely to give birth to a low birth weight baby than mothers who do get care, which quintuples their baby's risk of dying, according to the U.S. Office of Women's Health. An estimated 84 percent of pregnant women in the U.S. got medical attention in their first trimester in 2005, while 3.5 percent got late or no care. The term prenatal care generally refers to a regular schedule of physical exams, but proper nutrition, vitamins, physical activity and a healthy lifestyle also increase the likelihood of a healthy baby. Diabetes and hypertension in pregnancy have risen alarmingly in recent years. Diabetes prevalence has risen from 21.3 cases per 1,000 lives births in 1990 to 38.5 per 1,000 in 2005, while hypertension rates rose from 6.5 to 10.4 per 1,000 births. Updated February 2010