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These studies suggest diabetes can occur at any age, with type 1 diabetes more common in children and adolescents, and type 2 diabetes more common in adults, particularly those over 19 years old.
20 papers analyzed
Incidence and Age of Onset
Type 1 diabetes mellitus (T1DM) is predominantly diagnosed in children and adolescents, with a significant number of cases occurring before the age of 19. The incidence peaks around 12-14 years of age, although diagnoses in children younger than 5 years are increasing. This condition is characterized by severe insulin deficiency and often requires immediate insulin therapy.
Age-Related Endotypes
Research indicates that there are distinct endotypes of T1DM based on the age of diagnosis. Children diagnosed before the age of 7 exhibit different clinical and genetic characteristics compared to those diagnosed at 13 years or older. Younger children tend to have a higher prevalence of affected first-degree relatives and stronger genetic susceptibility.
Rising Prevalence
The prevalence of type 2 diabetes (T2DM) among adolescents and young adults (up to age 40) is increasing dramatically. This age group is particularly vulnerable due to longer disease exposure, which increases the risk of chronic complications. The major risk factors include obesity, family history, and a sedentary lifestyle.
Aggressive Disease Phenotype
Young-onset T2DM is often more aggressive than in older adults, leading to premature complications and adverse long-term outcomes. This condition affects more individuals of working age, thereby amplifying its societal impact .
High Prevalence and Complications
Diabetes is highly prevalent among older adults, with more than 25% of the U.S. population aged 65 and older affected by the condition. This age group faces higher mortality rates, reduced functional status, and an increased risk of institutionalization due to diabetes-related complications.
Global Trends
Globally, the number of older adults (65-99 years) with diabetes is projected to rise significantly, from 135.6 million in 2019 to 276.2 million by 2045. The highest prevalence is observed in the North America and Caribbean region.
Misdiagnosis and Management
Type 1 diabetes can also occur in adults over 30 years of age, often being misdiagnosed as type 2 diabetes. This late-onset T1DM is characterized by severe insulin deficiency and requires insulin therapy within a few years of diagnosis. However, many patients are initially treated as having T2DM, leading to suboptimal management.
Diabetes can manifest at any age, from early childhood to late adulthood, with varying clinical presentations and management challenges. Understanding the age-specific characteristics and risks associated with both type 1 and type 2 diabetes is crucial for effective diagnosis, treatment, and prevention strategies.
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