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Relation between fat intake and mortality: an ecological analysis in Belgium
L Staessen1, D De Bacquer, S De Henauw
1Laboratory of Food Analysis, Faculty of Pharmaceutical Sciences, Ghent University, Belgium.
Summary
Dietary fat intake shows varied associations with mortality in Belgian adults. Higher saturated fat correlated with increased all-cause mortality in men, while polyunsaturated fats showed protective effects.
Area of Science:
- Nutritional Epidemiology
- Public Health Nutrition
- Chronic Disease Epidemiology
Background:
- Dietary fat intake is a critical factor in public health, with potential links to various chronic diseases, including cancer.
- Understanding the specific associations between different types of dietary fats and mortality risks is essential for targeted health interventions.
- Previous research has suggested correlations between fat consumption and mortality, but specific population data and detailed analyses are needed.
Purpose of the Study:
- To investigate the relationship between dietary fat intake and all-cause and cancer-specific mortality in a Belgian population sample.
- To examine associations between macronutrient intakes, particularly various fat components, and mortality rates.
- To identify potential sex-specific differences in the impact of dietary fat on mortality.
Main Methods:
- A representative sample of Belgian adults (25-74 years) was surveyed between 1980-1985 using a 24-hour food record method to assess dietary habits.
- Energy-adjusted macronutrient intakes were compared with mortality data from 1988-1990.
- Univariate and multivariate linear regression analyses were employed, controlling for confounders like fiber intake, smoking, and education level.
Main Results:
- In men, significant positive associations were observed between all-causes mortality and saturated fat intake, and the ratio of n-3 to n-6 fatty acids.
- Colorectal cancer mortality in men was linked to polyunsaturated fat intake and the unsaturated to saturated fat ratio, with inverse associations also noted.
- In women, only breast cancer mortality showed associations with saturated and monounsaturated fat intake; prostate cancer mortality was unrelated to dietary fat.
Conclusions:
- Dietary fat composition, particularly saturated and polyunsaturated fats, exhibits complex associations with mortality risks in men, including all-cause and colorectal cancer mortality.
- Specific fat intake patterns may influence breast cancer mortality in women, but overall cancer mortality showed weak, non-significant links to fat intake.
- These findings highlight the importance of considering specific fat types and their ratios in relation to mortality, with potential sex-specific effects.