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Diet and chronic atrophic gastritis: a case-control study.

E Fontham, D Zavala, P Correa

Journal of the National Cancer Institute

|April 1, 1986

Summary

Dietary factors like fruits, vegetables, and vitamin C may protect against gastric precancerous lesions, while milk consumption increases risk. Smoking also elevates risk in this high-risk population.

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Area of Science:

Gastroenterology
Oncology
Nutritional Epidemiology

Background:

Chronic atrophic gastritis is a precursor to gastric cancer.
Southern Louisiana has a high-risk population for gastric issues.
Understanding risk factors is crucial for prevention.

Purpose of the Study:

To investigate dietary and environmental risk factors for gastric cancer precursor lesions.
To compare gastric juice parameters between a high-risk US population and a Colombian population.
To explore the relationship between gastric pH, nitrate, and nitrite levels and lesion severity.

Main Methods:

Hospital-based case-control study design.
Comparison of 93 subjects with advanced chronic atrophic gastritis to two control groups.

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Analysis of dietary intake, cigarette smoking, gastric juice pH, nitrate (NO3-), and nitrite (NO2-).

Main Results:

Fruit, vegetable, and vitamin C intake showed a protective effect.
Milk consumption was associated with increased risk.
Cigarette smoking showed a twofold increased risk.
Higher nitrate and nitrite levels were observed in a high-risk Colombian population compared to the Louisiana group.
Increased gastric pH correlated with more severe gastric lesions.

Conclusions:

Dietary modifications, including increased fruit, vegetable, and vitamin C intake, may reduce gastric precancerous lesion risk.
Elevated gastric pH and specific nitrite/nitrate levels are associated with gastric pathology.
Further research is needed to elucidate the role of intragastric nitrosation in gastric carcinogenesis.