Life course models for upper aero-digestive tract cancer

Area of Science:

• Epidemiology
• Public Health
• Social Determinants of Health

Background:

• Upper aero-digestive tract (UADT) cancers are a significant global health burden, ranking as the fourth most frequent cancer and cause of cancer mortality.
• Chronic diseases like UADT cancer are influenced by cumulative social and psychological factors across an individual's life course, from birth through early adulthood.
• Understanding UADT cancer requires integrating multifactorial exposures and risks, acknowledging their complex interplay over time.

Purpose of the Study:

• To propose a conceptual framework integrating socio-economic inequalities, oral health risk factors, and UADT cancer incidence.
• To highlight the utility of life-course epidemiology in understanding the origins of chronic diseases and social inequalities in health.
• To explore how socially patterned exposures across different life stages influence adult disease risk and mortality.

Main Methods:

• Utilizing life-course epidemiology principles to analyze the cumulative impact of social and biological risk factors.
• Examining the relationship between socio-economic position, oral health, and UADT cancer incidence over an individual's lifespan.
• Synthesizing existing research to develop a conceptual model for UADT cancer etiology.

Main Results:

• Socio-economic inequalities and oral health risk factors, considered across the life course, are integral to UADT cancer development.
• The timing and duration of exposure to socio-economic circumstances may provide critical insights into cancer causation.
• Life-course perspective offers a more comprehensive understanding than isolated risk factor analysis for UADT cancer.

Conclusions:

• A life-course approach is essential for understanding the complex etiology of UADT cancers and associated health disparities.
• Integrating social and biological pathways across the lifespan is crucial for effective UADT cancer prevention and intervention strategies.
• Socio-economic factors and oral health, viewed through a life-course lens, are key determinants of UADT cancer risk and mortality.