Systematic review of dietary trans-fat reduction interventions
Lirije Hyseni1, Helen Bromley1, Chris Kypridemos1
1Department of Public Health and Policy, Whelan Building, University of Liverpool, Liverpool L69 3GB, England.
Bulletin of the World Health Organization
|December 5, 2017
Summary
Legislation and multicomponent interventions are most effective for reducing trans-fatty acids (TFAs) intake. Individual-focused strategies yield smaller reductions in dietary TFAs.
Area of Science:
- Public Health Nutrition
- Dietary Interventions
- Systematic Review
Background:
- Dietary trans-fatty acids (TFAs) pose significant health risks.
- Reducing TFA consumption is a key public health objective.
- Evidence on the effectiveness of various TFA reduction strategies is needed.
Purpose of the Study:
- To systematically review studies on interventions aimed at reducing dietary trans-fatty acids (TFAs) intake.
- To evaluate the effectiveness of different types of TFA reduction strategies.
Main Methods:
- Conducted a systematic literature search across multiple databases (1986-2017).
- Included empirical and modeling studies, focusing on absolute decrease in TFA consumption (g/day).
- Narrative synthesis grouped interventions from individual to population-wide levels.
Main Results:
- Legislation banning TFAs in Denmark led to virtual elimination of TFA intake.
- Mandatory food reformulation reduced TFA content by approximately 2.4 g/day.
- Worksite interventions averaged 1.2 g/day reduction, while labelling and counselling showed ~0.8 g/day.
Conclusions:
- Multicomponent interventions, particularly legislation and food reformulation, are highly effective in reducing TFA intake.
- Population-wide strategies significantly outperform individual-targeted approaches.
- Future strategies should prioritize evidence-based, high-impact interventions for maximum TFA reduction.
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