Understanding Blood Sugar: What Does a 139 Reading Mean?

A fasting blood glucose of 139 mg/dL is elevated for a non-diabetic (normal: 70–110 mg/dL). This falls in the prediabetes range (100–125 mg/dL fasting, or 140–199 mg/dL 2-hour post-glucose challenge). It indicates increased diabetes risk.

Action steps: Consult a doctor for confirmatory testing (HbA1c, oral glucose tolerance test). Lifestyle modifications—weight loss, balanced diet, regular exercise—can significantly reduce progression to type 2 diabetes.