What is type 2 diabetes mellitus (Type 2 DM)?

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Last updated: April 1, 2025View editorial policy

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From the Guidelines

Type 2 diabetes management should start with metformin (500 mg once daily, increasing to 1000 mg twice daily as tolerated) as first-line therapy, combined with lifestyle changes including a balanced diet low in refined carbohydrates, regular physical activity (150 minutes weekly of moderate exercise), and weight loss if overweight, as recommended by the most recent guidelines 1. The goal of treatment is to achieve and maintain blood glucose levels as close to the nondiabetic range as possible, with target fasting levels of 80-130 mg/dL and post-meal levels below 180 mg/dL, and a general A1C target below 7% 1. Key aspects of management include:

  • Lifestyle modifications: diet, exercise, and weight loss
  • Medication: metformin as first-line, with potential addition of SGLT-2 inhibitors, GLP-1 receptor agonists, DPP-4 inhibitors, or sulfonylureas based on individual factors
  • Regular blood glucose monitoring and A1C testing to track long-term control
  • Addressing underlying insulin resistance to prevent complications like heart disease, kidney damage, and nerve problems It's essential to consider the individual's specific needs and factors when selecting additional medications, and to regularly review and adjust the treatment plan as necessary 1.

From the Research

Type 2 Diabetes Management

  • Type 2 diabetes is a complex condition that requires a comprehensive management approach, including lifestyle modifications and pharmacological interventions 2, 3, 4, 5, 6.
  • Metformin is a commonly used antidiabetic medication that has been shown to be effective in lowering blood glucose levels without increasing the risk of hypoglycemia 2, 4.
  • However, metformin may not be suitable for all patients, and alternative treatments such as sulfonylureas, thiazolidinediones, and glucagon-like peptide-1 receptor agonists may be considered 3, 5, 6.

Treatment Options

  • Sulfonylureas and thiazolidinediones have been shown to be effective in improving glycemic control, with sulfonylureas stimulating insulin secretion and thiazolidinediones increasing insulin sensitivity 3.
  • Glucagon-like peptide-1 receptor agonists have been found to have a beneficial effect on weight loss, blood pressure, and lipid profiles, making them a potential alternative to metformin 5.
  • Pioglitazone, a thiazolidinedione, has been shown to improve glycemic control, reduce insulin resistance, and exhibit favorable pleiotropic effects, including anti-inflammatory and antioxidant actions 6.

Considerations for Treatment Selection

  • The choice of treatment should be individualized, taking into account the patient's specific needs, comorbidities, and potential contraindications 2, 5, 6.
  • Patients with heart failure, for example, may need to avoid certain medications such as thiazolidinediones due to the risk of water retention 6.
  • The efficacy and safety profiles of different treatments should be carefully considered, with glucagon-like peptide-1 receptor agonists showing a favorable profile in terms of efficacy and safety 5.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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