The pie charts show six reasons for insomnia; in two groups of people. Group A is aged 20-40 and group B is aged 60-80.
In group A, stress is the most common cause of insomnia (40%), while ill health, is the least common cause at 6%. Ten per cent of people in this group indicate both; depression and environmental factors as causes. Six per cent of respondents indicate medication and 5% say ill health is a factor.
In group B, most people indicate that their sleeplessness is caused by ill health (31%) followed by medication (20%). A similar proportion of people report depression and drinks with caffeine as causes of insomnia (16% and 15% respectively), while stress and environmental factors cause sleeplessness for eight to ten per cent of people in this group.