The research team believe that parental stress levels in combination with other known risk factors are more likely to increase the chance of a child or children suffering from asthma.
It is already shown that women who are stressed in pregnancy have a greater risk of having a child that goes on to suffer from asthma or other allergies.
Stress is also widely accepted as a stimulus that can bring on asthma attacks.
Professor Rob McConnell and his research team have theorised that stress causes the harmful effects of air pollution to be worse when it comes to making the respiratory system inflamed and for the condition of asthma to be brought about.
