Diabetes and Cancer: A Twisted Bond.

Area of Science:

• Metabolic research
• Oncology
• Endocrinology

Background:

• Type 2 Diabetes Mellitus (T2DM) and cancer share risk factors like hyperglycemia, hyperinsulinemia, inflammation, and obesity.
• While direct causality between T2DM and cancer is debated, specific links are emerging.
• Metabolic dysregulation is implicated in the progression of both diseases.

Purpose of the Study:

• To review the interconnected factors influencing both cancer and T2DM.
• To examine the causal relationships and associations between metabolic alterations and cancer development.
• To highlight potential therapeutic and diagnostic strategies based on shared mechanisms.

Main Methods:

• Literature review of epidemiological and Mendelian randomization studies.
• Analysis of cellular, tissular, and organismic data on hyperglycemia and cancer.
• Discussion of metabolic alterations like the Warburg effect and impact of dietary interventions.

Main Results:

• Obesity and hyperinsulinemia show robust associations with several cancer types, supported by Mendelian randomization.
• Hyperglycemia has a proven causal link specifically with breast cancer.
• Metabolic alterations, including tumor glucose uptake, and the potential of dietary changes are discussed.
• Branched-chain amino acids are proposed as potential biomarkers for T2DM management and pancreatic cancer detection.

Conclusions:

• Shared risk factors and metabolic pathways link T2DM and cancer, offering avenues for prevention and early detection.
• Targeting metabolic alterations and understanding biomarkers like branched-chain amino acids could improve patient outcomes.
• Further research into these interconnections is crucial for developing integrated management strategies.