Asthma UK's Edwina Wooler and Jenny Parry show how youth workers can offer assistance to those with the condition and what to do if an attack occurs Q: What causes asthma and how many teenagers are affected in the UK? The causes of asthma remain unclear, but you are more likely to develop the condition if you have a family history of asthma, eczema or allergies. Certain environmental factors such as pollution may also play a part, and children whose parents smoke are more likely to...