Association between Nutrient-Based Dietary Patterns and Bladder Cancer in Italy

Area of Science:

• Epidemiology
• Nutrition Science
• Oncology

Background:

• Limited understanding exists regarding the relationship between dietary patterns and bladder cancer.
• Dietary habits vary significantly across populations, necessitating region-specific research.

Purpose of the Study:

• To investigate the association between nutrient-based dietary patterns and bladder cancer risk in an Italian population.
• To identify specific dietary patterns that may influence bladder cancer etiology.

Main Methods:

• A case-control study involving 690 bladder cancer cases and 665 hospital-controls in Italy (2003-2014).
• Principal component factor analysis was used to derive four nutrient-based dietary patterns from 28 selected nutrients.
• Logistic regression models were employed to estimate odds ratios (ORs) and 95% confidence intervals (CIs), adjusting for confounding factors.

Main Results:

• Four distinct dietary patterns were identified: "Animal products", "Vitamins and fiber", "Starch-rich", and "Animal unsaturated fatty acids".
• A significant inverse association was observed between the "Vitamins and fiber" dietary pattern and bladder cancer risk (OR = 0.70, 95% CI: 0.48-0.99).
• Borderline inverse associations were noted for "Animal products" and "Animal unsaturated fatty acids" patterns, while the "Starch-rich" pattern showed no significant association.

Conclusions:

• Dietary patterns characterized by high intake of vitamins and fiber, typically found in fruits and vegetables, are associated with a reduced risk of bladder cancer.
• These findings support existing evidence and highlight the potential role of specific dietary components in bladder cancer prevention.
• Further research into population-specific dietary patterns and their impact on cancer risk is warranted.