Teenagers who experience very poor sleep may be more likely to experience poor mental health in later life, according to a new study. In a paper published in the Journal of Child Psychology and Psychiatry, researchers analyzed self-reported sleep quality and quantity from teenagers and found that there was a significant relationship between poor sleep and mental health issues. The team, based at the University of Reading, and Goldsmiths and Flinders Universities found that among the 4790 participants, those who experienced depression reported both poor quality and quantity of sleep, while those with anxiety had poor quality of sleep only, compared to those teenagers who took part who didn’t report anxiety or depression