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Type II Diabetes I: Introduction01:26

Type II Diabetes I: Introduction

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
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Diabetes Mellitus: Type 2 and Gestational

Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
Carbohydrate Metabolism01:36

Carbohydrate Metabolism

Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
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Type I Diabetes I: Introduction01:12

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...

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Testosterone and type 2 diabetes.

Mathis Grossmann1, Emily J Gianatti, Jeffrey D Zajac

  • 1Department of Medicine, Austin Health/Northern Health, University of Melbourne, Heidelberg, Victoria, Australia. mathisg@unimelb.edu.au

Current Opinion in Endocrinology, Diabetes, and Obesity
|April 27, 2010
PubMed
Summary
This summary is machine-generated.

Low testosterone levels are linked to type 2 diabetes (T2D) and metabolic syndrome. Testosterone therapy may improve insulin resistance, but further research is needed to confirm its benefits beyond fat reduction.

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Area of Science:

  • Endocrinology
  • Metabolic Health
  • Men's Health

Background:

  • Low testosterone levels are prevalent in men with type 2 diabetes (T2D).
  • Testosterone's association with T2D is complex, influenced by factors like obesity and insulin resistance.

Purpose of the Study:

  • To review the relationship between testosterone levels and type 2 diabetes (T2D).
  • To explore testosterone's role in metabolic syndrome and insulin resistance.

Main Methods:

  • Review of multiple epidemiological studies.
  • Analysis of associations between testosterone levels (total and free), insulin resistance, and T2D.
  • Examination of the influence of body fat, particularly visceral adipose tissue.

Main Results:

  • Low testosterone levels are associated with and predict T2D and metabolic syndrome.
  • Free testosterone shows association with insulin resistance and T2D in some studies.
  • The testosterone-fat relationship is bidirectional, with weight loss and testosterone therapy impacting both.

Conclusions:

  • Low testosterone is common in men with T2D, linked to aging and obesity.
  • The independent effect of testosterone treatment on insulin resistance in T2D requires further investigation.
  • Testosterone therapy for T2D should be reserved for men with confirmed hypogonadism pending more evidence.