Young girls with mental illness are three times more likely to become teenage parents than those without a major mental illness, according to a first-of-its-kind study by researchers at the Institute for Clinical Evaluative Sciences (ICES) and Women's College Hospital.
The study, published today in the journal Pediatrics, is the first to examine trends in fertility rates among girls with mental illness.
"Research tells us that young girls are at high risk of pregnancy complications, including preterm birth, poor fetal growth and postpartum depression," said Dr. Simone Vigod, a psychiatrist at Women's College Hospital and an adjunct scientist at ICES. "Add to this a pre-existing mental illness, and these young women are forced to manage significant additional challenges."
In the study, researchers examined live birth rates from 1999 to 2009 in 4.5 million girls, 15 to 19 in Ontario, with and without a major mental health illness. They found young girls with a major mental health illness, including depression, bipolar disorder and other psychotic disorders, were three times more likely to become teenage parents.
Although birth rates in both affected and unaffected adolescent girls decreased over time, the gap between the groups appeared to be increasing slightly over the 10-year study period. Among girls with a major mental illness, live births decreased by only 14 per cent during the study period compared to a 22 per cent drop among unaffected girls.
