Hi, Doctor- My father was diagnosed with Gastric adenocarcinoma in late May. His CEA level was 54 on his early June blood test. Without any treatments, his current CEA level is 34. We ve been only giving him different kinds of home remedies. We would like to know what does the drop in the CEA number mean? Can this mean that the cancer is shrinking? Is it possible for the CEA to go down with herbal teas, vitamins, fresh vegtable juices, etc. Thank you very much in advance. Greg