Early onset type 2 diabetes mellitus: an update

Area of Science:

• Endocrinology
• Metabolic Diseases
• Public Health

Background:

• Rising incidence and prevalence of type 2 diabetes mellitus (T2DM) in individuals under 40 years old.
• Key risk factors include severe obesity, family history, ethnicity, maternal/gestational diabetes, and female sex.
• Pathogenesis involves impaired insulin secretion and insulin resistance linked to ectopic adiposity.

Purpose of the Study:

• To highlight the diagnostic challenges and critical prognostic implications of early-onset T2DM.
• To emphasize the accelerated decline in pancreatic beta-cell function and increased risk of complications in young T2DM patients.
• To address the underrepresentation of young adults in clinical trials and the social challenges impacting management.

Main Methods:

• Review of current literature on early-onset T2DM epidemiology, pathogenesis, diagnosis, and management.
• Analysis of risk factors, diagnostic criteria, and prognostic outcomes compared to later-onset T2DM and type 1 diabetes mellitus (T1DM).
• Examination of treatment guidelines and the impact of social determinants on patient adherence and distress.

Main Results:

• Early-onset T2DM is associated with rapid beta-cell dysfunction, necessitating earlier insulin therapy.
• Patients with early-onset T2DM face higher mortality and lifetime risks of microvascular complications.
• Young T2DM patients are underrepresented in clinical trials, and social factors significantly affect treatment adherence.

Conclusions:

• Accurate diagnosis, excluding T1DM, LADA, and MODY, is crucial for managing early-onset T2DM.
• The unique challenges of early-onset T2DM require further research into pathogenesis, complications, and tailored treatments.
• Addressing social determinants is vital for improving outcomes and reducing diabetes distress in young adults with T2DM.