Next, we’ll talk about “Who is at risk for diabetes and what should I look for in a diabetes screening?” The next question is. (1) Age ≥ 40 years; (2) History of impaired glucose regulation; (3) Overweight (BMI ≥ 24 kg/m2) or obese (BMI ≥ 28 kg/m2) and/or centrally obese (waist circumference ≥ 2250 px in men and ≥ 2125 px in women); [BMI = weight in kg/height2 ((in m)] (4) Sedentary lifestyle; (5) Family history of type 2 diabetes in first-degree relatives; (6) History of delivery of a large child (birth weight ≥ 4 kg) or a family history of diabetes. (5) Family history of type 2 diabetes in first-degree relatives; (6) Women with a history of macrosomia (birth weight ≥ 4 kg) or gestational diabetes; (7) Hypertension [systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg (1 mmHg = 0.133 Pa), or receiving antihypertensive treatment; (8) Dyslipidemia [high-density lipoprotein cholesterol (HDL-C) ≤ (8) dyslipidemia [HDL-C ≤ 0.91 mmol/L (≤ 35 mg/dl), triglycerides ≥ 2.22 mmol/L (≥ 200 mg/dl)], or receiving lipid-regulating therapy; (9) patients with atherosclerotic cardiovascular disease; (10) patients with a history of transient steroidal diabetes mellitus; (11) patients with polycystic ovary syndrome (PC0S); (12) long-term treatment with antipsychotics and/or antidepressants (12) Patients on long-term antipsychotic and/or antidepressant therapy. Screening for diabetes should be initiated early in these high-risk groups, regardless of age, and for those without risk factors for diabetes other than age, screening should be initiated at age ≥40 years. Fasting blood glucose testing is a simple and easy way to screen for diabetes and should be used as a routine screening method, but there is a possibility of missing the diagnosis. When conditions permit, OGTT (fasting glucose and glucose 2h after sugar load) should be performed to confirm the diagnosis when possible. For those with normal first screening results, it is advisable to repeat screening at least once every 3 years.