The veteran Government adviser said pensioners in mental decline are "wasting people's lives" because of the care they require and should be allowed to opt for euthanasia even if they are not in pain.
She insisted there was "nothing wrong" with people being helped to die for the sake of their loved ones or society.
The 84-year-old added that she hoped people will soon be "licensed to put others down" if they are unable to look after themselves.
