Overweight teenagers are more likely to consult their GP for asthma, and other respiratory symptoms, than those of normal weight, a study from the Netherlands has found. A total of 617 children, aged 2 to 18 years, were recruited to a prospective cohort study from 71 GP practices across the country. Height and weight were measured at recruitment and other health and social data collated from questionnaires sent to patients/parents. Children with disabilities or conditions affecting their weight were excluded. Details of subsequent consultations were obtained from the medical records.