 [ Symptoms ] weight loss due to loss of taste and diarrhea i have lossed 24 pounds last six months no taste and diarrhea often i have ibs and have had colonoscopy and cat scan negative results also have diverticulosis i am 70 years old [ Disease ] most likely you have diabetes and you need to see the doctor to get your blood sugar down how do know you have heart failure if you have been to a doctor that has told you this i am not sure why they did not check your blood sugar and blood pressure etc