This study reviewed cohort studies and randomized controlled trials on the link between fatty acids and the risk of heart disease or sudden cardiac death.
The study included 49 observational studies with more than 550,000 participants, as well as 27 randomized controlled trials with more than 100,000 participants.
Results: The study did not find any link between saturated fat consumption and the risk of heart disease or death.
Conclusion: People with higher saturated fat intake were not at an increased risk of heart disease or sudden death.
Furthermore, the researchers did not find any benefit to consuming polyunsaturated fats instead of saturated fats. Long-chain omega-3 fatty acids were an exception, as they had protective effects.
Chowdhury R, et al. Association of dietary, circulating, and supplement fatty acids with coronary risk: a systematic review and meta-analysis. Annals of Internal Medicine Journal, 2014.