Date	Event	Description
13 March 2018	New citation required and conclusions have changed	This update now reports arrhythmia (atrial fibrillation) and cardiovascular mortality data. Data now included from 79 RCTs (112,059 participants) lasting at least one year, of which 25 were at low summary risk of bias. We added the following outcomes to the list of primary outcomes upon the request of World Health Organization (WHO) Nutrition Guidance Expert Advisory Group (NUGAG) Subgroup on Diet and Health. Cardiovascular mortality. Arrhyhtmia (new and recurrent). We altered inclusion criteria to include only RCTs of at least 12 months' duration (rather than 6 months as previously), and we excluded cohort studies. We are assessing effects of long‐chain omega‐3 fats separately from effects of alpha‐linolenic acid (as planned in the previously published version).
27 April 2017	New search has been performed	Electronic searches updated to 27 April 2017
14 March 2012	Amended	Additional tables re‐numbered
16 October 2011	New search has been performed	Searches updated to July 2011. Cohort studies not included in this update, and previously included cohort studies and related text have been removed. Previously included trials where we know that no deaths or primary or secondary health events occurred were removed. New secondary outcomes added (fatal and non‐fatal arrhythmias, and diabetes) Cardiovascular mortality added as a primary outcome.
9 September 2008	Amended	Converted to new review format.
1 August 2004	New citation required and conclusions have changed	Substantive amendment