Social media may also contribute to the increasing youth suicide rates. The Kaiser Family Foundation found that the average media time use of 8-18 year-olds was more than seven and a half hours a day. Teens who are the heaviest media users report more sadness and boredom., online bullying or cyberbullying, is the "most common online risk for all teens," according to the American Academy of Pediatrics. Cyberbullying has been shown to cause higher levels of depression and anxiety and has been connected to more cases of youth suicide than traditional bullying. Those most at risk for cyberbullying include lesbian, gay, bisexual and transgender youth (54 percent) followed by female teens (21 percent). Among middle-school children, cyberbullying victims and offenders were up to two times more likely to attempt suicide than those who were neither.