“Pornography is like a silent epidemic ... but nobody wants to talk about it much,” says child protection advocate Kristen Jenson.

She’s the author of the “Good Pictures Bad Pictures” series of read-aloud books that teach children how to recognize and reject pornography.

In America, kids are encountering porn at younger and younger ages—often without their parents knowing, Jenson says. Once a child has a smartphone, it is only a matter of time until the child is exposed to porn—often by other children. And it’s having a devastating impact on their impressionable young minds, Jenson says.

“Every school bus in America is a triple X theater because children are showing pornography to other children in buses. I’ve heard so many stories of five-year-olds getting shown hardcore pornography on a school bus,” she says.

Retroactive studies found that the average age kids first view pornography is around 11 years old, but Jenson concluded from her work and research that the average age is much lower.

In our in-depth interview, she walks me through many aspects of porn consumption and how children are impacted by it: How does porn affect children’s overall development and their chances of meaningful sexual relationships later on in life? How does porn affect children’s mental health? How does it affect their sexual health? Do children get addicted to porn? How are girls impacted by porn? How do sexual predators use porn as a grooming tool for kids?

Violent porn, in particular, is a huge problem in itself, Jenson said. By the age of 18, the vast majority of teenagers—about 80 percent—have been exposed to violent porn: “That’s the main fare out there. It’s violent porn. It’s hitting, it’s slapping, hair-pulling, strangling.”

Many children’s perception of sex is poisoned by violent pornography. She told me a story of a girl who was kissed by her 12-year-old boyfriend for the first time: “And he strangled her because that’s what he'd seen in porn.”

It is perhaps unsurprising then that there has been a steep increase in what is called child-on-child sexual abuse over the last decade. In fact, about 70 percent of all sexual child abuse cases are now child-on-child, she said: “Kids love to imitate. When you add in the factor of pornography ... it is not surprising that some of these children want to go ahead and act out what they see in pornography,” Jenson says.

So what should parents do to protect their children?

Simply telling your children that porn is bad is not good enough, she said. Children need to be given three basic things: a vocabulary to talk about pornography, a warning against it, and a plan of what to do when they are exposed to it.

To help parents in this endeavor, she wrote her book series “Good Pictures, Bad Pictures.” These books, geared to different age groups, are meant as a tool to help parents with such conversations: “The point is to model parents talking to their children. It’s really important to open that conversation.”

“One of the most loving things that you can do for your child is to give them a defense against not only pornography, but all forms of sexual exploitation,” she says.

Views expressed in this video are opinions of the host and the guest, and do not necessarily reflect the views of The Epoch Times.