Study Shows Rise in Diabetes Among Women Starting Pregnancy

Wash. Post/HealthDay News: Pre-Pregnancy Diabetes Rates Have Doubled, by Serena Gordon:

The number of women starting their pregnancies with type 1 or type 2 diabetes has doubled since 1999, but rates of gestational diabetes have stayed the same, new research finds.

In some age groups, the results were even worse. Researchers from Kaiser Permanente found that the number of teenagers who had diabetes before birth jumped fivefold....

Past research has focused on the number of women who develop diabetes during pregnancy, which is called gestational diabetes, and generally disappears after the baby is born.

The new study, which included 175,249 women who gave birth from 1999 to 2005, also included women with type 1 and type 2 diabetes. All of the women in the study were treated at one of 11 Kaiser Permanente hospitals in southern California. Fifty-two percent of the women were Hispanic, 26 percent were white, 11 percent were Asian/Pacific Islanders, and 10 percent were black, according to the study.

Preexisting diabetes -- type 1 or type 2 -- was found in 1.3 percent of all pregnancies. In 1999, the rate of preexisting diabetes was 0.81 per 100 births; by 2005, that number had jumped to 1.82 per 100 births.

But, during that six-year period, gestational diabetes rates remained nearly unchanged. In 1999, 7.5 women per 100 births had gestational diabetes; in 2005, it was 7.4 women per 100 births.