Objective:

To propose a conceptual framework linking differentiated thyroid cancer (DTC), insulin resistance (IR), and cardiovascular disease (CVD), exploring potential molecular mechanisms and their clinical significance.

Key Findings:

• DTC is associated with an increased burden of cardiovascular disease in long-term survivors, emphasizing the need for monitoring.
• Insulin resistance and diabetes mellitus are potential risk factors for thyroid carcinogenesis, suggesting a need for integrated management.
• Direct evidence linking DTC to systemic insulin resistance remains limited, indicating a gap in current understanding.
• Metabolic reprogramming in DTC may lead to systemic inflammation and endothelial dysfunction, which could inform treatment strategies.

Interpretation:

The proposed DTC–IR–CVD axis suggests that metabolic and inflammatory changes associated with DTC may contribute to cardiovascular vulnerability, warranting further investigation to enhance patient care.

Limitations:

• Limited direct clinical evidence linking DTC to systemic insulin resistance, highlighting the need for more robust studies.
• The model is primarily hypothesis-generating and not an established causal pathway, necessitating cautious interpretation.
• Need for further studies to address knowledge gaps before making causal inferences, which is critical for advancing the field.

Conclusion:

The framework presented serves as a basis for future mechanistic and clinical studies to explore the connections between DTC, insulin resistance, and cardiovascular disease, with the potential to improve patient outcomes.