A major international study has found no clear evidence that taking antidepressants during pregnancy increases the risk of autism or attention deficit hyperactivity disorder (ADHD) in children. The findings offer reassurance to millions of women who rely on medication to manage depression and anxiety during pregnancy.
The research, published in The Lancet Psychiatry, examined data from more than 25 million pregnancies worldwide, making it one of the most comprehensive reviews conducted on the subject. Scientists analyzed 37 previous studies involving nearly 650,000 pregnancies in which antidepressants were used and compared them with pregnancies where the medications were not taken.
At first glance, researchers observed a slightly higher rate of autism and ADHD diagnoses among children whose mothers had taken antidepressants during pregnancy. However, the apparent link weakened significantly after experts adjusted for other important factors such as family medical history, genetics, and the mother’s mental health condition.
Researchers explained that depression and anxiety themselves may contribute to risks associated with child development, making it difficult to separate the effects of medication from the effects of underlying mental health conditions. According to the study authors, once these variables were considered, there was no convincing evidence that commonly prescribed antidepressants directly caused autism or ADHD.
An interesting observation from the study further strengthened this conclusion. Scientists found similar patterns of autism and ADHD risk in children whose fathers had used antidepressants during the pregnancy period. Since a father’s medication cannot affect a fetus directly, experts believe the results point more toward shared genetic or family-related factors rather than the drugs themselves.
The study also reported that higher doses of antidepressants did not lead to higher risks in children, another indication that the medicines may not be responsible for developmental disorders. Most commonly used antidepressants, including selective serotonin reuptake inhibitors (SSRIs), showed no significant association with autism after adjustments were made.
However, researchers noted that some older antidepressants, such as amitriptyline and nortriptyline, appeared linked with slightly increased risks. They cautioned that these drugs are usually prescribed in more severe or complex mental health cases, which may explain the findings rather than the medications themselves.
Medical experts emphasized that untreated depression during pregnancy can pose serious risks to both mother and baby. These include premature birth, poor maternal health, and complications after childbirth. Specialists warned women not to stop antidepressant treatment abruptly without medical advice.
The researchers concluded that treatment decisions during pregnancy should be made carefully between patients and doctors, balancing the benefits of mental health care with any potential risks. The study provides strong reassurance that commonly prescribed antidepressants are unlikely to be a major cause of autism or ADHD in children.
