Worry : Dame Esther Rantzen , the founder of ChildLine , said that children as young as 11 had contacted the service with concerns about porn . More than one in ten children ( 12 per cent ) aged 12 to 13 have made or been part of a sexually explicit video , according to new research . Nearly one in ten ( nine per cent ) of children in the age group are worried that they are addicted to porn , a survey of nearly 700 children for the NSPCC 's ChildLine service found . And around one in five ( 18 per cent ) said they have seen porn images that have shocked or upset them . Dame Esther Rantzen , the founder of ChildLine , said that children as young as 11 had contacted the service with concerns about pornography . She said : 'Young people are turning to the internet to learn about sex and relationships . 'We know they are frequently stumbling across porn , often unintentionally , and they are telling us very clearly that this is having a damaging and upsetting effect on them . 'Girls in particular have said they feel like they have to look and behave like porn stars to be liked by boys . 'We absolutely have to talk to young people about sex , love , respect and consent as soon as we feel they are ready , to ensure that they gain a proper perspective between real life relationships and the fantasy world of porn . ' Peter Liver , director of ChildLine , said children reported that watching porn made them feel depressed , gave them body image issues and put pressure on them to engage in sex acts they are not ready for . A report by charity ChildWise in 2013/14 revealed that website Pornhub was among the top five favourite sites named by boys aged 11-16 . And young people post approximately 18,000 messages regarding exposure to porn on the ChildLine discussion forums every month . Mr Liver said : 'The Government recently proposed plans for children aged 11 upwards to be taught about rape and sexual consent as part of PSHE in schools . 'This would include discussion around what they have learnt from watching pornography . 'Across society , we need to remove the embarrassment and shame that exists around talking about porn - which is why we have launched a ChildLine campaign to help young people to make more informed choices . ' Around one in five ( 18 per cent ) children aged 12 to 13 said they have seen porn images that have shocked or upset them . ChildLine has created the Fight Against Porn Zombies ( FAPZ ) campaign to tackle the problem . It will use animations to illustrate the implications of exposure to porn in both boys and girls . Ruth Sutherland , chief executive of Relate relationship support charity , said : 'We very much welcome ChildLine 's new campaign , particularly because we know that children and young people do not feel that adults understand the online issues they face . 'In an IPPR poll last year , 61 per cent of young people said adults are out of touch with young people 's relationships and friendships , and 56 per cent said adults find it hard to understand or help with online issues . 'That 's why high quality , consistent relationships and sex education in schools is so important . 'We must get the right experts helping young people to understand what building blocks are needed for strong relationships , and ensure that what 's being taught is applicable in the digital age . How easy access to porn is affecting young people - for example their sexual expectations and self-image - should be a vital component of this . '
Nearly ten per cent of children are worried that they are addicted to porn . Around five in one say they have seen images that have shocked them . Dame Esther Rantzen says kids as young as 11 call Childline about porn .