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Type 2 diabetes affects millions globally. This review explores how obesity, diet, and inflammation, particularly from saturated fats, contribute to insulin resistance and the disease

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Area of Science:

  • Endocrinology
  • Immunology
  • Metabolic Syndrome

Background:

  • Type 2 diabetes impacts over 285 million people worldwide, with projections indicating a significant increase by 2030.
  • Obesity, particularly visceral adipose tissue expansion, is a key driver of inflammation in type 2 diabetes.
  • Dyslipidemia facilitates the recruitment of immune cells to adipose tissue, exacerbating inflammation and insulin resistance.

Purpose of the Study:

  • To enhance understanding of type 2 diabetes development.
  • To review the roles of diet, obesity, and inflammation in insulin sensitivity and diabetes risk.
  • To explore cellular and molecular mechanisms linking obesity-induced inflammation and insulin resistance.

Main Methods:

  • Literature review focusing on diet-induced inflammation and obesity.
  • Examination of cellular and molecular factors in insulin resistance.
  • Analysis of the interplay between free saturated fatty acids, immune cells, and adipose tissue.

Main Results:

  • Elevated dietary free saturated fatty acids contribute to inflammation in visceral adipose tissue.
  • Immune cells, including macrophages and T cells, infiltrate adipose tissue, releasing pro-inflammatory cytokines.
  • These cytokines promote insulin resistance, a hallmark of type 2 diabetes.

Conclusions:

  • Dietary factors, obesity, and inflammation are intricately linked in the pathogenesis of type 2 diabetes.
  • Understanding these relationships is crucial for developing strategies to improve insulin sensitivity and prevent diabetes.
  • Novel insights into diet-induced inflammation offer potential therapeutic targets for type 2 diabetes management.