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Insulin and cancer.

D Barry Boyd1

  • 1239 Glenville Road, Greenwich, CT 06831, USA. dbb@integrativeoncology.org

Integrative Cancer Therapies
|January 10, 2004
PubMed
Summary
This summary is machine-generated.

Obesity and metabolic syndrome increase cancer mortality risk by promoting tumor growth via the insulin/insulin-like growth factor (IGF) system. Lifestyle interventions targeting insulin resistance may improve cancer outcomes.

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Area of Science:

  • Oncology
  • Endocrinology
  • Metabolic Syndrome

Background:

  • Obesity is increasingly linked to higher cancer mortality rates.
  • The insulin/insulin-like growth factor (IGF) system and metabolic syndrome, characterized by hyperinsulinemia, are implicated in cancer development and progression.
  • Chronic inflammation and cytokine abnormalities associated with metabolic syndrome may also drive tumor growth.

Purpose of the Study:

  • To review the growing evidence linking insulin and IGF-1 to the etiology and prognosis of various cancers, particularly breast cancer.
  • To examine the role of the insulin/IGF system and metabolic syndrome in cancer cell proliferation and tumor progression.
  • To highlight the potential negative impact of elevated IGF-1 on cancer therapy outcomes.

Main Methods:

  • Literature review of studies investigating the relationship between obesity, metabolic syndrome, insulin, IGF-1, and cancer.
  • Analysis of the mechanisms by which insulin and IGF-1 promote tumor cell proliferation via tyrosine kinase pathways.
  • Examination of the contribution of chronic inflammation and cytokine dysregulation in metabolic syndrome to cancer progression.

Main Results:

  • Insulin and IGF-1 act as growth factors, enhancing tumor cell proliferation through the tyrosine kinase cascade.
  • Elevated IGF-1 levels may interfere with cancer treatments, negatively impacting patient prognosis.
  • Obesity, Western diet, inactivity, and stress contribute to insulin resistance and hyperinsulinemia, increasing cancer risk.

Conclusions:

  • The insulin/IGF system and metabolic syndrome play significant roles in cancer etiology and prognosis.
  • Interventions addressing lifestyle factors like diet, exercise, and stress management are crucial for managing insulin resistance and improving cancer outcomes.
  • A multidisciplinary approach is essential for mitigating the adverse effects of hyperinsulinemia and improving cancer patient survival.