A new study has found stress about work can cause the onset of asthma in adults.
The new research, published in the Journal of Epidemiology and Community Health, surveyed 7000 workers in Germany, and found people fearful of losing their jobs were 60 percent more likely to develop asthma for the first time as a result of their stress.
The study was a joint project between Massey University and two universities in Europe.
One of the researchers, Massey's Dr Jeroen Douwes told Nine to Noon he believed stress could be behind an increase of asthma in recent years.
He said once asthma was developed, it was hard to get rid of.