“Women with a chronic physical condition like diabetes, hypertension and asthma may benefit from targeted strategies to reduce their risk of mental illness,” says Hilary Brown, an assistant professor at the Interdisciplinary Centre for Health & Society at U of T Scarborough. Brown and her colleagues used data from ICES, a non-profit research institute where she’s also an adjunct scientist. ICES uses population-based health information to study a broad range of health-care issues.
The study looked at more than 850,000 women in Ontario; aged 15 to 49 during their perinatal period, which extends from conception to one year after birth. It found that those with a chronic physical condition (20.4 %); were more likely than those without (15.6 %) to experience mental illness during pregnancy or postpartum.
Perinatal mental illness
The researchers defined a perinatal mental illness as diagnosis of a psychotic disorder; mood or anxiety disorder, substance use disorder or an addiction from conception to one year after giving birth. Brown, the study’s lead author, notes that they looked at any physical condition that lasts more than one year; and has an impact on functioning including diabetes, arthritis, heart disease, hypertension and asthma.
Women with a chronic physical condition may be at an increased risk of mental illness; for a number of biological and social reasons, Brown says. For one, research suggests that a lot of chronic physical conditions; are characterized by chronic inflammation, and that mental illness could be triggered by similar biological mechanisms. There’s also the possibility that both could have genetic links.
“The social reasons include the stress of managing a chronic disease; managing pain, fatigue or sleeplessness these are all things that come with many chronic physical conditions,” she says. This study builds on previous research that shows chronic physical conditions increase the risk of mental illness in the general population; but this has rarely been studied in pregnant women.
Chronic disease management
“It is a real missed opportunity,” says Brown, an expert on reproductive as well as maternal and child health. “It’s important to look at pregnancy because chronic disease; is not commonly a factor that physicians use to screen for perinatal mental illness risk.” The study, which is published in the journal PLOS Medicine; received funding from a Canadian Institutes of Health Research (CIHR) grant.
Brown says the findings highlight the need to better identify and help treat women in this group. She says targeted strategies should include those that help support chronic disease management; and improve coping. While mental illness negatively affects mothers, infants and families, only about one-third of women with perinatal mental illness get the care they need. These women do not receive care for a variety of reasons, notes Brown.