I'd rather not post specifics as it'll become outing. My question is as the title, can you flatly refuse cancer treatment? Say the cancer is curable and in a middle aged person. it's caught at a fairly early stage and prognosis is excellent, is refusing treatment seen as an option or could family/next of kin go down the "not of sound mind" route even if the person was of perfectly sound mind? The cancer will eventually lead to death. Would doctors support treatment refusal?