A fasting blood glucose of 6.0 mmol/L is generally not dangerous, but dietary control is still needed to avoid going into pre-diabetes. The normal range for fasting blood glucose is 3.9mmol/L to 6.1mmol/L. A fasting blood glucose of 6.0mmol/L is within the normal range. A fasting blood glucose of 7.0 mmol/L suggests hyperglycemia, and a fasting blood glucose greater than 6.1 mmol/L and less than 7.0 mmol/L is prediabetic, with a risk of developing diabetes. Fasting blood glucose of 6.0 mmol/L may be caused by consuming a large amount of food with high sugar content in recent times. In such cases, the blood sugar may decrease after a period of controlled diet and reasonable exercise. A fasting blood glucose of 6.0 mmol/L is generally not dangerous. If discomfort occurs, it is recommended to seek medical attention and treatment under the guidance of a doctor.