I do not use sugar at all, I drink a flavored water that contain Aspartame, I am concerned about the side effects as I have a family history of diabetes, cancer, and high blood pressure. I am a registered nurse and, understand many additives can cause severe problems. My blood pressure is in the normal range (90/ 120, sugar level about 106 and suffer from low iron, and have had iron infusions. What should I be concerned about. I have had breast cancer(a lumpectomy with chemotherapy afterwards, and had and intestinal and stomach resection. I drink approximately 3 cups of coffee per day with an Aspartame sweetener, and approximately 1 liter of this flavored water a day, along with additional water per day. Please advise me of what my concerns should be.