Report shows strong sex differences in teenage health behaviour

Strong sex differences have been found in the health behaviours of school age children across Europe and North America in one of the largest surveys ever carried out into young people's health.

The study, funded by the World Health Organization, is based on interviews with 162 000 young people, aged 11, 13, and 15 in 35 countries. It found that girls are more concerned about their body size, yet boys are more likely to be overweight.

Girls in all countries reported a poorer health …