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The consumption of industrially produced trans fatty acids (TFAs) has been associated with an increased risk of heart disease. In recognition of this, countries, states, and cities worldwide have implemented TFA policies aimed at reducing their availability in the food supply.

This article aims to provide an update of the evidence of the effectiveness of policies aimed at reducing TFAs in the food supply.

A systematic review of the literature from 2013 onward was conducted, building on a previously published review that examined the evidence of the impact of TFA policies worldwide from 2000 to 2012. Studies that were 1) empirical, 2) examined a TFA policy, and 3) examined the effect of the policy on TFA amounts and availability pre– and post–policy intervention were included. Modeling studies examining the impact of TFA policies on cardiovascular, equity, and economic outcomes were …