A Republican congresswoman blamed pornography - as well as a host of other cultural issues - for school shootings, during a recent meeting.

Diane Black, who is running for governor of Tennessee, made the comments while speaking to a group of ministers during a "listening session" recently, according to the HuffPost wesbite, which reported the story and included audio of the remarks.

The comment about pornography came as Black wondered what was driving some children to such violent ends.

"What makes them do that?" she said. "Because as a nurse, I go back to root causes."

She then listed a couple of these root causes, which included pornography, as well as "deterioration of the family" and violence in movies.

"Pornography, it's available, it's available on the shelf when you walk in the grocery store," she said. "Yeah, you have to reach up to get it, but there's pornography there. All of this is available without parental guidance. And I think that is a big part of the root cause."

Ms Black also spoke briefly about mental illness being something "we've got to address."

It is not clear whether Black gave specifics about the ways she believes pornography could lead to gun violence.

Her spokesman Chris Hartline, wrote that Ms Black "believes the breakdown of families and communities plays a significant role in instances of school violence."

Her remarks were among the latest attempts to explain the United States' high numbers of mass shootings.

Liberals and other advocates of stricter gun control point to statistics that indicate that the prevalence of guns is the single most important variable when examining why the United States has more mass shootings than other countries.

March for Our Lives – in pictures Show all 13 1 /13 March for Our Lives – in pictures March for Our Lives – in pictures Demonstrators chant during the protest for gun legislation and school safety AP March for Our Lives – in pictures Trevon ‘Tre’ Bosley, 19, of Chicago, the brother of Terrell Bosley who was killed in 2006 in a case of mistaken identity, speaks during the rally AP March for Our Lives – in pictures Marjory Stoneman Douglas High School student Delaney Tarr speaks at the rally AFP/Getty March for Our Lives – in pictures Protestors line the streets in Washington Getty Images March for Our Lives – in pictures People arrive for the March For Our Lives rally against gun violence in Washington, DC AFP/Getty March for Our Lives – in pictures Protestors carrying placards in Washington AFP/Getty March for Our Lives – in pictures Protestors hold up placards in Washington AFP/Getty March for Our Lives – in pictures Schoolchildren wear targets ahead of the rally Getty March for Our Lives – in pictures Attendees congregate in preparation for the march Getty March for Our Lives – in pictures Students brought a host of innovative placards AFP/Getty March for Our Lives – in pictures The movement’s main demand is the banning of assault rifles Getty March for Our Lives – in pictures Since the Florida shooting, students have called for urgent gun reform AFP/Getty March for Our Lives – in pictures In the wake of the Florida attack, President Donald Trump called for teachers to be armed AFP/Getty

Many conservatives and the National Rifle Association point to other causes, including intense news coverage of mass shootings, video games, abortion and a lack of religion, inadequate control of entry into schools, and even the act of going to school itself.

"Hearing from many parents, they're scared to send their kids to school," Republican Texas state representative Jonathan Stickland wrote on Twitter after the shooting near Houston. "We need to give them as many different choices as possible."

Pornography has long been a target of social conservatives and some religious groups in the United States, though it has been upheld by the courts as constitutionally protected speech.

As The Washington Post wrote after legislators in Utah approved a resolution calling porn "evil, degrading, addictive and harmful," "the science isn't settled yet on what regular porn use does to the brain and a person's sexual and romantic life - especially when it comes to young people who view it in their formative years."

Debating porn's ills on society seems like a game of choose-your-own-study. There are studies that claim to show a link between pornography and a myriad of sexual, mental and emotional problems.

And there are studies that claim to show porn watching actually helps people's relationships. In Denmark, some teachers actually use the topic of porn to teach students about the difference between consensual and nonconsensual sex, the Economist reports.

Branding porn as a public health hazard, though, also doesn't change advocates' fundamental problem: They have little legal recourse to limit it.

Studies analysing mass shootings in the United States and contrasting this country with others demonstrate that the single most important variable is the high number of guns in the United States, according to The New York Times, given that many other developed countries experience similar rates of video-game use, mental illness and other societal challenges but do not have comparable numbers of mass shootings.