What is the minimum level for average blood sugar level for 3 months?

The minimum average blood sugar level, as measured by hemoglobin A1c (HbA1c), for a healthy individual is typically around 4% to 5.6%. An HbA1c level of 5.7% to 6.4% indicates prediabetes, while 6.5% or higher suggests Diabetes. Maintaining an HbA1c below 5.7% is generally recommended for optimal health.