Initial Management of Type 2 Diabetes Mellitus

Treatment Algorithm Based on Presentation

For newly diagnosed T2DM patients without severe hyperglycemia, the American College of Cardiology recommends starting metformin 500 mg daily alongside comprehensive lifestyle modifications immediately at diagnosis, then titrate metformin by 500 mg every 1-2 weeks to a target dose of 2000 mg daily in divided doses 1, 2
Immediate insulin therapy is required if ketosis or diabetic ketoacidosis is present, random blood glucose ≥250 mg/dL, HbA1c ≥8.5%, or unclear distinction between Type 1 and Type 2 diabetes 1, 2, 3
For these patients, start insulin at 0.5 units/kg/day, then add metformin after metabolic stabilization 3

The American Heart Association recommends implementing a heart-healthy dietary pattern focusing on Mediterranean, DASH, or vegetarian/vegan diet patterns, fiber-rich whole grains, reduced red meat consumption, and complete elimination of sugar-added beverages 1, 4
Target weight loss of 7-10% of baseline body weight for those with overweight/obesity 1, 4
Adults should aim for minimum 150 minutes per week of moderate-intensity OR 75 minutes per week of vigorous-intensity physical activity, while children/adolescents should aim for minimum 60 minutes daily of moderate-to-vigorous exercise 1, 4

If glycemic targets are not achieved after 3 months on metformin, add either SGLT-2 inhibitor or GLP-1 receptor agonist for patients with additional ASCVD risk factors or established cardiovascular/kidney disease 1, 2, 4

HbA1c should be checked every 3 months until target achieved (<7% for most patients) 1, 2
Finger-stick blood glucose monitoring is indicated for patients taking insulin or medications with hypoglycemia risk, initiating or changing treatment regimen, patients not meeting treatment goals, or those with intercurrent illnesses 1, 2

Do not delay metformin initiation, as early aggressive treatment provides better long-term outcomes 1, 2
Do not overlook cardiovascular risk stratification, and consider moderate-intensity statin therapy for patients with diabetes aged 40-75 years 4

A family-centered approach is essential, and the entire family must adopt healthy eating habits and lifestyle changes 1, 2
Screen time management is important, and non-academic screen time should be limited to <2 hours daily 1, 2