Concerned about diabetes. drank 30oz of water in 1.5hrs and peeing every 30-45 min for a couple hours. was tested 9mo ago and not diabetic. just started doing 16:8 intermittent fasting. could fasting (kerosine) cause extra water loss/more urine?

If you have concern about being diabetic, get your fasting blood tested for glucose at an accredited laboratory. If you are pre-diabetic, losing 5-10% body weight and exercising at least 150 minutes/week could ward of deterioration of glucose metabolism. Wish you good health!

Though dilution of urine is dependent on amount of water intake, baseline urine formation is function of kidney. Symptoms of diabetes are polydipsia , polyuria and polyphagia. So if you can fast, you do not have polyphagia. If you drink only 300 Ml In 1 1/2 hour then you do not have polydipsia. So I don’t think you have diabetes. Good luck. Go to be tested by the doctor. Hope it helps