<s>[INST] Borderline diabetic - have been counting calories for last 3 months and have lost 25 pounds on 1500 calorie diet. Lately have had light headedness, sparkles in eyes for 5-15 at a time, headaches both sides from temples straight back, cold skin with profuse sweating. Any major concern before I see my care taker next week? I am a 73 year old male. Sometimes feel like I am in a vacuum. [/INST] Hello there I have read through your question and understand your concern. It seems you are experiencing hypoglycemic episodes. Too much dieting can make your blood sugar levels fall suddenly and cause hypoglycemia and even cause serious side effects. I would advise you to get your blood sugar levels tested and till then refrain from any rigorous dieting or exercise. I hope that answers your question. If you have any further questions please feel free to write. Thank you for choosing healthcare magic. </s>