Women are just as susceptible to becoming addicted to online pornography as men, according to new research.
People who regularly surf pornographic websites are as much at risk of developing cybersex addiction as the gender to which it's traditionally aimed.
Previous research had suggested as many as 17 per cent of women describe themselves as "addicted" to online porn.
Another German study showed heavy use of pornography could make some women hypersexual - a personality disorder that involves spending excessive time engaged in sexual fantasies and urges or in planning for and engaging in sexual behaviour.
Scientists discovered that behavioural patterns in hypersexual women resembled those previously observed in men with the same problem including pornography dependence, excessive masturbation and promiscuity.
Pornography generates more internet traffic than anything else online and has been dubbed the 'new cocaine'.
In the new study, researchers looked at sex addiction among heterosexual women who regularly used internet pornography, reports the scientific journal Cyberpsychology, Behavior and Social Networking.
Professor Matthias Brand, of Duisburg-Essen University in Germany, and his colleagues explored the role of anticipating and receiving sexual gratification in the development of cybersex addiction.
The study involved 102 young women, half of whom were internet porn users and the others not, and assessed their addiction to sex.
An experiment also analysed their levels of arousal when shown 100 pornographic pictures - as well as their cravings for sex.
Prof Brand said: "Results indicated internet porn users rated pornographic pictures as more arousing and reported greater craving due to pornographic picture presentation compared with non-users.
"Moreover craving, sexual arousal rating of pictures, sensitivity to sexual excitation, problematic sexual behaviour and severity of psychological symptoms predicted tendencies toward cybersex addiction in internet porn users."
Factors such as being in a relationship, the number of sexual contacts and their satisfaction with them and use of interactive cybersex were not associated with the condition.
Prof Brand said: "These results are in line with those reported for heterosexual males in previous studies."
The journal's editor, Dr Brenda Wiederhold said: "The authors found cybersex addiction among heterosexual female users is similar to that of heterosexual males."
Dr Wiederhold, of the Virtual Reality Medical Institute in Brussels, said although the study population was only limited to individuals under 30 it helps to understand cybersex addiction in females.