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Nutrient Patterns and Bladder Cancer: A Case-Control Study in Iran.

Marzieh Pourkerman1, Melika Hajjar1, Farah Naja2

  • 1Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

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This summary is machine-generated.

Dietary nutrient patterns significantly impact bladder cancer (BC) risk. A mineral-dominant pattern (NP1) lowered BC odds, while a fat-dominant pattern (NP2) increased BC risk in an Iranian study.

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Area of Science:

  • Nutritional Epidemiology
  • Oncology
  • Public Health

Background:

  • Bladder cancer (BC) remains a significant health concern globally.
  • Understanding dietary influences on BC risk is crucial for prevention strategies.
  • Previous research has often focused on single nutrients, overlooking complex dietary patterns.

Purpose of the Study:

  • To investigate the association between nutrient patterns (NPs) and bladder cancer (BC) risk.
  • To identify specific dietary patterns linked to increased or decreased BC incidence in the Iranian population.

Main Methods:

  • A hospital-based case-control study involving 306 participants (106 BC cases, 200 controls).
  • Dietary intake assessed using a validated 168-item Food Frequency Questionnaire (FFQ).
  • Principal Component Analysis (PCA) used to derive nutrient patterns; logistic regression analyzed BC risk (ORs, 95% CIs).

Main Results:

  • Two primary nutrient patterns identified: Mineral Dominant (NP1) and Fat Dominant (NP2).
  • Higher adherence to NP1 (rich in folate, minerals, fiber, protein) significantly reduced BC odds (OR=0.24).
  • Higher adherence to NP2 (rich in fats, sodium, cholesterol) significantly increased BC odds (OR=5.41).

Conclusions:

  • Nutrient patterns, not just single nutrients, are strongly associated with bladder cancer risk.
  • Promoting mineral-rich and plant-based dietary patterns may help reduce BC incidence.
  • Further research into dietary patterns is essential for effective BC prevention and management.