Key Recommendations from the American Diabetes Association
The American Diabetes Association (ADA) publishes comprehensive Standards of Medical Care in Diabetes annually, providing evidence-based recommendations for diabetes diagnosis, treatment, and care. These guidelines are considered the gold standard for diabetes management in the United States and influence care worldwide. Here's what the ADA recommends on key aspects of diabetes care.
Diagnosis and Screening
Diagnostic Criteria
The ADA recommends diagnosing diabetes based on any of the following criteria:
- Fasting plasma glucose ≥126 mg/dL (7.0 mmol/L)
- 2-hour plasma glucose ≥200 mg/dL (11.1 mmol/L) during an oral glucose tolerance test
- A1C ≥6.5% (48 mmol/mol)
- Random plasma glucose ≥200 mg/dL (11.1 mmol/L) in patients with symptoms of hyperglycemia
Screening Recommendations
- Testing for prediabetes and type 2 diabetes should begin at age 35 for all adults
- Testing should be considered at a younger age for those with risk factors
- Testing should be repeated at least every 3 years if results are normal
- Women with gestational diabetes should have lifelong testing at least every 3 years
- Children and adolescents should be tested if they are overweight/obese and have additional risk factors
Glycemic Targets
A1C Goals
- A reasonable A1C goal for many nonpregnant adults is <7% (53 mmol/mol)
- More stringent goals (<6.5%) may be appropriate for selected individuals if achievable without significant hypoglycemia
- Less stringent goals (<8%) may be appropriate for patients with limited life expectancy, advanced complications, or severe hypoglycemia risk
- Goals should be individualized based on patient factors
Blood Glucose Targets
- Preprandial glucose: 80–130 mg/dL (4.4–7.2 mmol/L)
- Peak postprandial glucose: <180 mg/dL (<10.0 mmol/L)
- Time in range (for CGM users): >70% of readings between 70-180 mg/dL
Lifestyle Management
Nutrition Therapy
- There is no single ideal dietary distribution of calories for all people with diabetes
- Meal plans should be individualized while maintaining the general goals of healthful eating patterns
- Carbohydrate intake has the greatest influence on blood glucose levels
- Multiple eating patterns are acceptable, including Mediterranean, DASH, plant-based, and low-carbohydrate approaches
- Reducing overall carbohydrate intake has the strongest evidence for improving glycemia
- Minimize added sugars and refined grains
- Replace sugar-sweetened beverages with water
Physical Activity
- Adults should engage in 150 minutes or more of moderate-to-vigorous intensity activity weekly
- Resistance training is recommended 2–3 times per week
- Prolonged sitting should be interrupted every 30 minutes
- Flexibility and balance training are recommended 2–3 times weekly for older adults
- Children should engage in 60 minutes of physical activity daily
Pharmacologic Approaches
Type 1 Diabetes
- Multiple daily injections of insulin or continuous subcutaneous insulin infusion (insulin pump)
- Most people should use rapid-acting insulin analogs to reduce hypoglycemia risk
- Consider automated insulin delivery systems (artificial pancreas) when available
- Educate on matching insulin to carbohydrate intake, fat and protein content, and anticipated physical activity
Type 2 Diabetes
- Metformin is the preferred initial medication for most people
- Early combination therapy should be considered to achieve and maintain glycemic targets
- Medication selection should consider cardiovascular disease, heart failure, and chronic kidney disease
- GLP-1 receptor agonists or SGLT-2 inhibitors with proven cardiovascular benefit are recommended for those with established cardiovascular disease
- SGLT-2 inhibitors are recommended for those with heart failure or chronic kidney disease
- Consider patient factors including cost, side effects, and patient preferences when selecting medications
Cardiovascular Disease and Risk Management
Blood Pressure
- Target blood pressure <130/80 mmHg for most adults
- For older adults, individualize targets based on comorbidities
- ACE inhibitors or ARBs are recommended for those with hypertension and albuminuria
- Multiple-drug therapy is often required
Lipid Management
- Statin therapy based on cardiovascular risk assessment
- High-intensity statin therapy for those with cardiovascular disease
- Moderate-intensity statin therapy for those with multiple risk factors
- LDL cholesterol target <70 mg/dL for those with cardiovascular disease
Antiplatelet Therapy
- Aspirin therapy (75–162 mg/day) for secondary prevention in those with cardiovascular disease
- Consider aspirin for primary prevention based on risk assessment
Microvascular Complications and Foot Care
Nephropathy
- Annual screening for albuminuria and estimated glomerular filtration rate
- Optimize glucose and blood pressure control
- SGLT-2 inhibitors recommended for those with chronic kidney disease
- ACE inhibitors or ARBs for those with albuminuria
- Referral to nephrologist when eGFR <30 mL/min/1.73 m²
Retinopathy
- Initial comprehensive eye examination at diagnosis for type 2 diabetes
- For type 1 diabetes, initial examination within 5 years of diagnosis
- If no retinopathy is present, examinations every 1-2 years
- More frequent examinations if retinopathy is progressing
- Optimize glucose, blood pressure, and lipid control
Neuropathy and Foot Care
- Annual comprehensive foot examination
- Visual inspection of feet at every healthcare visit
- Screening for peripheral neuropathy using monofilament and one other test
- Referral to foot care specialist for history of foot ulcers or amputation, deformities, or severe neuropathy
- Patient education on daily foot care
Psychosocial Care
- Routine screening for diabetes distress, depression, anxiety, and eating disorders
- Consider screening for cognitive impairment in older adults
- Refer to mental health professionals when needed
- Address psychosocial issues in diabetes self-management education
- Consider the impact of social determinants of health on diabetes outcomes
Special Populations
Children and Adolescents
- A1C goal <7.5% for most children and adolescents
- Comprehensive pediatric diabetes care team
- Screening for associated autoimmune conditions in type 1 diabetes
- Transition planning to adult care
Older Adults
- Individualized glycemic goals based on health status and life expectancy
- Simplified regimens to reduce hypoglycemia risk
- Screen for geriatric syndromes (cognitive impairment, depression, urinary incontinence, falls, persistent pain)
- Consider medication cost and complexity
Pregnancy
- Preconception counseling for women with diabetes
- A1C <6.5% before conception if possible
- Screen for gestational diabetes at 24-28 weeks of gestation
- Insulin is the preferred medication for treating hyperglycemia in gestational diabetes
- Metformin and glyburide should not be used as first-line agents
Conclusion
The American Diabetes Association's guidelines provide comprehensive, evidence-based recommendations for diabetes care. However, they emphasize that all aspects of care should be individualized to each person's unique needs, preferences, and circumstances.
These guidelines are updated annually to incorporate new evidence and evolving best practices. Healthcare providers and people with diabetes should stay informed about the latest recommendations to ensure optimal care.
For the most current and detailed guidelines, refer to the ADA's Standards of Medical Care in Diabetes, published annually in the journal Diabetes Care and available on the ADA's website.