NEW YORK (AP) — Suicides among U.S. kids aged 10 to 17 jumped to a 19-year high in the month following the release of a popular TV series that depicted a girl ending her life, researchers said.

The study published Monday can’t prove that the Netflix show “13 Reasons Why” was the cause, but there were 195 more youth suicides than would have been expected in the nine months following the show’s March 2017 release, given historical and seasonal suicide trends, the study estimated.

During April 2017 alone, 190 U.S. tweens and teens took their own lives. Their April 2017 suicide rate was .57 per 100,000 people, nearly 30 percent higher than in the preceding five years included in the study. An additional analysis found that the April rate was higher than in the previous 19 years, said lead author Jeff Bridge, a suicide researcher at Nationwide Children’s Hospital in Columbus, Ohio.

“The creators of the series intentionally portrayed the suicide of the main character. It was a very graphic depiction of the suicide death,” which can trigger suicidal behavior, Bridge said.

Bridge acknowledged the study’s limitations included not knowing whether anyone who died by suicide had watched the show. Also, the researchers were not able to account for other factors that might have influenced suicides. Those include the April 19, 2017, suicide of former New England Patriots player Aaron Hernandez and a man accused of a Facebook-publicized killing who died by suicide the day before Hernandez. Bridge said those deaths couldn’t account for the spike the study found for the entire month of April.

The researchers analyzed data from the federal Centers for Disease Control and Prevention on deaths in Americans aged 10 to 64 from January 2013 through December 2017. Their results were published in the Journal of the American Academy of Child and Adolescent Psychiatry. The researchers found no change in suicide rates in those 18 and older after the show was released.

Related from 2017:

Child psychologist advises parents about pros, cons of controversial Netflix show

Schools across the nation issued warnings to parents about Netflix’s original series “13 Reasons Why,” including three school districts in Utah.

The results are plausible and add to evidence that compelling media depictions of suicide can negatively influence young people, said sociologist Anna Mueller of the University of Chicago, who was not involved in the research.

Lisa Horowitz, a co-author and researcher at the National Institute of Mental Health, noted that suicide is the second leading cause of death for U.S. teens and called it “a major public health crisis.” Her agency helped pay for the study.

Teen suicide rates have increased in recent years and other research has suggested that bullying and heavy use of social media may contribute to the risk.

Netflix included warning messages with some of the episodes and created a website with crisis hotlines and other resources. In the second season, the show’s actors offered advice to viewers on where to seek help. The series’ third season will run later this year.

A Netflix spokesman noted that the new study conflicts with University of Pennsylvania research published last week that found fewer suicidal thoughts among young adults who watched the entire second season than among non-viewers.

“We’ve just seen the study and are looking into the research,” he said. “This is a critically important topic and we have worked hard to ensure that we handle this sensitive issue responsibly.”

Horowitz said the new results highlight how important it is for parents and other adults to connect with young people.

“Start a conversation, ask how are they coping with the ups and downs of life, and don’t be afraid to ask about suicide,” she said. It’s a myth that just asking might be a trigger, Horowitz said.

“One of the best ways to prevent is to ask,” she said.

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Follow AP Medical Writer Lindsey Tanner at @LindseyTanner.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

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