I am a 58 year old female. Iam in very good health. I exercise regulary and eat healthy foods and i am not overweight. For two month I have had a foul metallic taste in my mouth which comes about 10 minutes after I eat. It seems to start at the back edges of my tongue. I have gone to my doctor and had all bloodwork checked. I have gone to my dentist and there is no problem with my teeth. Neither have any idea what the problem is. I am on no medications and I have stopped taking all vitamins and calcium. I feel like I am going crazy wit this constant disgusting taste.