According to a new study by Professor Andy Phippen of the Plymouth University, boys and girls as young as 13 often swap sexually explicit pictures of themselves.
Phippen told Channel 4 News in the UK: "This is mainstream; this is normal. This is almost mundane for some of the people we spoke to. In pretty much every school in the country, people aged 13 and 14 are talking about this stuff and dealing with this stuff."
The study, which was based on 220 students, ages 13 and 14, found they were becoming sexualized earlier, because pornography was so easy to find online.
One girl told researchers: "I get asked for naked pictures at least two or three times a week."
A boy said: "You would have seen a girl’s breasts before you’ve seen their face."
Another boy added: "It might shock parents this is what kids get up to but it’s just everyday life. It’s natural, it’s all part of growing up."
A 14-year-old from Berkshire, England said she received messages asking her to reply with a smiley face if she wanted sex or another symbol if she wanted to perform a sex act on the sender.
A 15-year-old girl said that boys expected certain things of girls because they had become used to seeing it in online porn.
Another 15-year-old added: "They’re put under pressure to get these photos of girls, to have muscles, to look this certain way, to be able to like do all these positions and to be able to last the longest in bed."