Modern medicine has succeeded in treating many of the diseases that kill us and, as a result, people are living longer.

However, as we get older and become more frail decisions have to be made about when to treat the ailments that crop up.

This becomes particularly challenging when a person can't make the decision for themselves, like those with advanced dementia.

Jean is in her eighties and is getting increasingly frail. Each ailment brings another admission to hospital. When should a treatment be given that will prolong her life, and when should it be withheld so that nature can take its course?

Joan Bakewell and her panel discuss the issues.

Producer: Beth Eastwood. Show less