Britain's National Health Service (NHS) suggests that up to half of adults have suffered from some form of mental illness at some stage in their life. Data from the Health Survey for England reveals that 25 per cent of all adults have been diagnosed with a mental health problem, while a further 18 per cent believe they have suffered from one but have not seen a doctor for diagnosis. Mental health expert Andy Bell said more needed to be done for people to get the help they need: Mr Bell said: "[These] figures are another wake-up call for the NHS to ensure that mental health support is available for people who need it when they need it. Timely access to effective mental health treatment saves lives.