Studies of children, teenagers and young adults have found higher rates of anxiety among people with asthma than in the rest of the population and in comparison to people with other chronic illnesses but the links between asthma and depression are much more tenuous. However, there has been very little research into the links between asthma and mental health problems among elderly people. A study of 1,092 elderly people in Singapore found that people with asthma were nearly two-and-a-half times more likely to suffer from depression than people without the condition and those with other chronic illnesses. However although there was a raised incidence of anxiety and depression among people with asthma this was not statistically significant i.e. it could just have been down to the particular characteristics of this sample of people.
Ng, Tze-Pin, Chiam, Peak-Chiang and Kua, Ee-Heok - Mental disorders and asthma in the elderly : a population-based study International Journal of Geriatric Psychiatry July 2007 22(7), 668-674