My husband has lost a lot weight over the paE st year He s 79yrs.and weighs 146lbs. He had his labs done on Monday and his BUN is 37, Creatinine 2.70, sed rate is 32. He says that he has diarrhea often but no blood in his stool. He gets up early and works all day long even though he s retired. He keeps saying his stomach feels empty alot of the time. I ve noticed that he doesn t have a big appetite, and he s said that his stomach bothers him and will take pepto-bismol often. I m worried that he may have cancer.