(Press-News.org) Babies are more likely to be born prematurely when either their father or mother has had a psychiatric diagnosis, according to a study conducted by researchers at the Icahn School of Medicine at Mount Sinai and the Karolinska Institutet and published July 20 in the open access journal PLOS Medicine.
The research shows, for the first time, that the risk of preterm birth is higher in infants whose father or mother has a psychiatric diagnosis than in those whose parents do not, and higher still when both parents have such diagnoses.
Preterm birth is associated with negative health consequences for infants. Women with psychiatric diagnoses have long been known to be at increased risk for preterm birth, but less is known about the risk in offspring of fathers with psychiatric diagnoses and couples where both parents had psychiatric diagnoses.
For this study, the research team analyzed data on all live births to Nordic parents (parents who were born in Sweden, Finland, Norway, Denmark and Iceland) in Sweden between 1997 and 2016. They obtained psychiatric diagnoses from the National Patient Register and data on gestational age from the Medical Birth Register.
There were 1.5 million births in the cohort, and 15 percent of those babies were born to parents with a psychiatric diagnosis. The team observed a trend towards earlier gestational age in offspring of parents with psychiatric disorders. For parents without a diagnosis, 5.8 percent of babies were born preterm. A paternal diagnosis increased that number to 6.3 percent of births and a maternal diagnosis increased it to 7.3 percent of births. Where both parents had a diagnosis, 8.3 percent of births were preterm.
The researchers also found that the risk was further increased for offspring of parents—mothers as well as fathers—who had several co-existing psychiatric disorders.
“Although the study was conducted in Sweden, if we speculate that inherited genetic risk a well as biological or psychological stress can carry over to other populations, the results are generalizable beyond Sweden. Given that roughly one in five children in the United States has at least one parent with a mental health disorder, the results of this study hold potential significance for public health,” said Sven Sandin, PhD, Associate Professor of Psychiatry and an epidemiologist at the Seaver Autism Center for Research and Treatment at Icahn Mount Sinai and senior author on the paper.
“Preterm birth can result in significant lifelong complications for the infant, and in my clinical experience, the mother has traditionally been held responsible for the events,” said Michael Silverman, PhD, Associate Professor of Psychiatry at Icahn Mount Sinai and an author on the paper. “While the gestational parent’s (the mother’s) behaviors have been historically implicated in a wide range of disorders like depression, autism, schizophrenia, and even food allergy, the non-gestational parent’s contributions have been a neglected but vital topic in the child developmental literature. This new work demonstrates that the non-gestational biologic parent’s (the father’s) psychiatric history is also associated with the increased likelihood of obstetric outcomes traditionally attributed solely to the mother.”
“Children of parents with mental illness are at increased risk of being born too early and our study shows that both the mothers and fathers are important,” says Weiyao Yin, PhD, postdoctoral researcher at the Karolinska Institutet and lead author of the paper.
Future studies should examine whether additional social support and prenatal care for families with a positive psychiatric history could have an impact on gestational age, the researchers said.
This press release was adapted from a release written by the PLOS Biology staff.
About the Mount Sinai Health System
Mount Sinai Health System is one of the largest academic medical systems in the New York metro area, with more than 43,000 employees working across eight hospitals, over 400 outpatient practices, nearly 300 labs, a school of nursing, and a leading school of medicine and graduate education. Mount Sinai advanced health for all people, everywhere, by taking on the most complex health care challenges of our time — discovering and applying new scientific learning and knowledge; developing safer, more effective treatments; educating the next generation of medical leaders and innovators; and supporting local communities by delivering high-quality care to all who need it.
Through the integration of its hospitals, labs, and schools, Mount Sinai offers comprehensive health care solutions from birth through geriatrics, leveraging innovative approaches such as artificial intelligence and informatics while keeping patients’ medical and emotional needs at the center of all treatment. The Health System includes approximately 7,300 primary and specialty care physicians; 13 joint-venture outpatient surgery centers throughout the five boroughs of New York City, Westchester, Long Island, and Florida; and more than 30 affiliated community health centers. We are consistently ranked by U.S. News & World Report's Best Hospitals, receiving high "Honor Roll" status, and are highly ranked: No. 1 in Geriatrics and top 20 in Cardiology/Heart Surgery, Diabetes/Endocrinology, Gastroenterology/GI Surgery, Neurology/Neurosurgery, Orthopedics, Pulmonology/Lung Surgery, Rehabilitation, and Urology. New York Eye and Ear Infirmary of Mount Sinai is ranked No. 12 in Ophthalmology. U.S. News & World Report’s “Best Children’s Hospitals” ranks Mount Sinai Kravis Children's Hospital among the country’s best in several pediatric specialties.
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