Articles about diabetes
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Summary
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These studies suggest that diabetes is a group of metabolic diseases characterized by hyperglycemia due to defects in insulin secretion or action, leading to long-term organ damage, with type 2 diabetes primarily caused by insulin resistance and deficiency, and current treatments may not be sufficient to prevent or treat the disease effectively.
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Understanding Diabetes: A Comprehensive Overview
Definition and Classification of Diabetes Mellitus
Diabetes Mellitus is a group of metabolic diseases characterized by chronic hyperglycemia due to defects in insulin secretion, insulin action, or both. This condition leads to long-term damage and dysfunction of various organs, particularly the eyes, kidneys, nerves, heart, and blood vessels . The primary pathogenic processes include autoimmune destruction of pancreatic β-cells, resulting in insulin deficiency, and abnormalities causing insulin resistance .
Type 1 and Type 2 Diabetes
Diabetes is broadly categorized into two main types:
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Type 1 Diabetes: This type is characterized by an absolute deficiency of insulin secretion due to autoimmune destruction of pancreatic β-cells. Individuals at risk can often be identified by serological evidence of an autoimmune process and genetic markers .
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Type 2 Diabetes: This more prevalent type results from a combination of insulin resistance and an inadequate compensatory insulin secretory response. It often remains asymptomatic for a long period, during which abnormal carbohydrate metabolism can be detected through plasma glucose measurements .
Global and Societal Implications of Diabetes
The incidence of diabetes, particularly Type 2, has dramatically increased worldwide due to changes in human behavior and lifestyle, such as sedentary habits and rich nutrition, coupled with genetic susceptibility. This epidemic, often referred to as 'diabesity' when associated with obesity, poses significant health challenges, especially in developing societies and among children .
Prevalence and Incidence
A systematic review and meta-analysis revealed that the global incidence of Type 1 diabetes is 15 per 100,000 people, with a prevalence of 9.5%. The increasing rates of diabetes highlight the urgent need for accessible and affordable insulin, particularly in underdeveloped regions.
Pathophysiology and Complications
The chronic hyperglycemia in diabetes leads to various complications:
- Microvascular Complications: These include retinopathy, which can result in vision loss, and nephropathy, leading to renal failure .
- Neuropathy: Peripheral neuropathy increases the risk of foot ulcers and amputations, while autonomic neuropathy affects gastrointestinal, genitourinary, and cardiovascular functions .
- Macrovascular Complications: Patients with diabetes have a higher incidence of atherosclerotic cardiovascular, peripheral arterial, and cerebrovascular diseases .
Current Treatment Approaches and Challenges
Standard treatment for diabetes includes lifestyle modifications (diet and exercise) and pharmacological interventions such as biguanides and insulin. However, diabetes often worsens over time, leading to debilitating complications despite treatment. The current understanding and treatment strategies are deemed inadequate, necessitating a reevaluation of approaches to manage and prevent diabetes effectively.
Conclusion
Diabetes Mellitus is a complex and chronic condition with significant global health implications. Understanding its pathophysiology, classification, and the challenges in current treatment approaches is crucial for developing effective strategies to manage and mitigate its impact. An integrated, international approach is essential to address the rising prevalence and associated complications of diabetes.
Sources and full results
Most relevant research papers on this topic
9
Diagnosis and classification of diabetes mellitus.
9
592 Citations
2005