Final answer:
An individual is considered prediabetic if their HbA1c levels are in the range of 5.7% to 6.4%. Levels below 5.7% are normal, whereas levels of 6.5% or higher indicate diabetes.
Step-by-step explanation:
Someone is considered prediabetic when their hemoglobin A1c (HbA1c) levels are between 5.7% to 6.4%. An HbA1c level represents the average blood glucose level over the past three to four months because the glucose remains attached to hemoglobin for the life of the red blood cell, which is normally about 120 days. A normal HbA1c level is less than 5.7%, while a level of 6.5% or higher indicates diabetes.
Thus, maintaining HbA1c levels close to the normal range is crucial as it offers a better chance of delaying or preventing the complications of diabetes, which can affect the eyes, kidneys, and nerves. Crucial for this control is regular monitoring, healthy lifestyle choices, and potentially medication if advised by a healthcare professional.