PLANS which could see smokers having to quit and overweight people making an effort to diet before they get health care are being studied by Dorset's health chiefs.

Gordon Brown is considering introducing a new "NHS constitution" that would enshrine patients' "responsibilities".

He has written about the ideas in an open letter to doctors and nurses.

Government officials have admitted the new constitution would mean patients would need to look at their lifestyles and take more responsibility, and make sure they turn up for appointments.

"If you are smoking too much, should you be entitled to an operation?" a Department of Health representative told a national paper.

Cllr Michael Griffiths, the head of Bournemouth's health scrutiny board, said the proposals were on "dangerous territory".

He said: "You could end up saying some people can't have the same level of treatment, which is quite unfair."

Richard Renaut, director of service development at Royal Bournemouth and Christchurch Hospital, said: "I think the right of patients for treatment free at the point of use is enshrined, so it's going to be difficult to enforce any conditions.

"But clearly we would want to work with the PCT to improve health. It might be a case of encouraging people to do things like stop smoking."

Sue Sutherland, the chief executive of Poole Hospital, said: "We will wait with interest to hear more about the government's proposals for a more personalised health service."

Keith Williams, from Dorset PCT, said: "We are committed to personal care and already offer advice and assistance to help individuals take control of their own health."