My grandfather is 78 and in the past year he has gone from very active to sleeping all the time. He is no longer wanting to eat. He has lost a great amount of weight and now needs adult diapers because he no longer feels when he has to urinate. He is losing his balance and falling and is now walking with a walker or cane. All of this in 1 year. He is refusing to go to the doctor because he says there is nothing wrong with him, even though he has been urinating blood off and on for the last year. What can I do to help him and what does all this mean? Is he giving up on life?