My father who is 88 years old and has Congestive Heart failure and renal failure now has anemia. The nurse wants to start him on an iron supplement and I have read that it can help to prolong his life. He is living in memory care and his quality of life had diminished greatly. When do we stop trying to improve his medical conditions and let nature take its coarse? I'm constantly struggling with honoring his health directive and/or taking the medical advisement given by his healthcare team.