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Cannabis use in pregnancy linked to a greater risk of autism

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Cannabis use in pregnancy linked to a greater risk of autism
Dr. Mark Walker, Chief of the Department of Obstetrics, Gynecology and Newborn Care at The Ottawa Hospital, professor on the University of Ottawa and senior writer on the research. Credit: The Ottawa Hospital

In the biggest research of its type, Ottawa researchers discovered that youngsters whose moms reported utilizing hashish throughout pregnancy have been at greater risk of autism. The incidence of autism was four per 1000 person-years amongst youngsters uncovered to hashish in pregnancy, in contrast to 2.42 amongst unexposed youngsters. The findings have been revealed in the distinguished medical journal Nature Medicine.

Recreational hashish is now authorized in Canada, however that does not imply it is protected for people who find themselves pregnant or breastfeeding. Health Canada and the Society of Obstetricians and Gynaecologists of Canada suggest in opposition to these populations utilizing hashish, and to this impact seem on hashish packaging.

“Despite these warnings, there is evidence that more people are using cannabis during ,” stated Dr. Mark Walker, Chief of the Department of Obstetrics, Gynecology and Newborn Care at The Ottawa Hospital, professor on the University of Ottawa and senior writer on the research. “This is concerning, because we know so little about how cannabis affects and their babies. Parents-to-be should inform themselves of the possible risks, and we hope studies like ours can help.”

The analysis group reviewed information from each beginning in Ontario between 2007 and 2012, earlier than was legalized. Of the half a million ladies in the research, about 3,000 (0.6 p.c) reported utilizing hashish throughout pregnancy.

The researchers had beforehand discovered that in pregnancy was linked to an elevated risk of preterm beginning, and created an animated video to summarize their findings. In that research, they discovered that ladies who used hashish throughout pregnancy typically used different substances together with tobacco, alcohol and opioids.

Considering these findings, in the present research the researchers particularly checked out 2,200 ladies who reported utilizing solely hashish throughout pregnancy, and no different substances. They discovered that infants born to this group nonetheless had an elevated risk of autism in contrast to those that didn’t use hashish.

The researchers have no idea how a lot hashish the ladies have been utilizing, how typically, at what time throughout their pregnancy, or the way it was consumed. They additionally be aware that whereas they tried to management for different components that might affect neurological improvement, their research can nonetheless solely present affiliation—not trigger and impact.

As hashish turns into extra socially acceptable, health-care researchers are aware that some parents-to-be may suppose it may be used to deal with morning illness.

“In the past, we haven’t had good data on the effect of cannabis on pregnancies,” stated Dr. Daniel Corsi, Epidemiologist at The Ottawa Hospital and BORN Ontario, which is affiliated with the CHEO Research Institute. “This is one of the largest studies on this topic to date. We hope our findings will help women and their health-care providers make informed decisions.”

Women who’re eager about or presently utilizing throughout pregnancy ought to discuss to their health-care supplier to assist make an about what’s greatest for them and their child.


Cannabis use in pregnancy linked to poorer outcomes for babies


More info:
Maternal hashish use in pregnancy and little one neurodevelopmental outcomes, Nature Medicine (2020). DOI: 10.1038/s41591-020-1002-5 , www.nature.com/articles/s41591-020-1002-5

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The Ottawa Hospital

Citation:
Cannabis use in pregnancy linked to a greater risk of autism (2020, August 10)
retrieved 10 August 2020
from https://medicalxpress.com/information/2020-08-cannabis-pregnancy-linked-greater-autism.html

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