Teenagers who are unhappy with their bodies are more likely to develop symptoms of eating disorders and depression in early adulthood, according to a new study led by University College London (UCL) researchers.

The research, believed to be the first of its kind, followed more than 2,000 twins born in England and Wales. It found that higher body dissatisfaction at age 16 predicted greater symptoms of eating disorders and depression well into the twenties, even after taking into account family background and genetics.

Researchers say the findings strengthen evidence that a negative body image is not just a reflection of poor mental health, but that it can also contribute to it.