Analysis of Omega-6 Fatty Acids and Type 2 Diabetes
Overview of Omega-6 Fatty Acids
Researchers have reviewed data from twenty prospective studies to investigate the connection between omega-6 fatty acids and type 2 diabetes. Omega-6 polyunsaturated fatty acids (PUFAs) are abundant in nuts, seeds, and various edible oils, including most vegetable oils. These fatty acids are essential for growth and development. Prominent clinical guidelines, such as those from the American Heart Association and the Dietary Guidelines for Americans, advocate for the inclusion of omega-6 fatty acids in a balanced diet and heart health management. However, some studies suggest that omega-6 fatty acids may also have adverse effects.
Recent Research Findings
A recent study published in The Lancet Diabetes & Endocrinology focuses on the potential benefits of omega-6 fatty acids concerning type 2 diabetes. The research team specifically examined the relationship between linoleic acid and arachidonic acid—two primary omega-6 fatty acids—and the onset of type 2 diabetes. They analyzed data from twenty prospective studies conducted between 1970 and 2010, which involved 39,740 participants aged 49 to 76 from ten countries, including Iceland, the Netherlands, the USA, Taiwan, the UK, Germany, Finland, Australia, Sweden, and France. Participants with a prior diagnosis of type 2 diabetes were excluded from this analysis.
Results of the Study
The findings revealed that higher levels of linoleic acid are associated with a reduced risk of developing type 2 diabetes. In contrast, no significant correlation was identified between arachidonic acid levels and the risk of type 2 diabetes. Since only two types of omega-6 fatty acids were analyzed in this study, further research is needed to explore the effects of other omega-6 fatty acids on type 2 diabetes.
Implications for Dietary Guidelines
Given the rising prevalence of type 2 diabetes, it is crucial to explore all potential avenues for prevention and management of the disease. This study suggests that omega-6 fatty acids, particularly linoleic acid, may help lower the risk of developing type 2 diabetes. As linoleic acid cannot be synthesized by the body, it must be obtained through diet. Therefore, dietary guidelines should encourage the consumption of nuts, seeds, and edible oils to ensure adequate intake of this beneficial fatty acid.
Reference
Wu, JHY et al. Omega-6 fatty acid biomarkers and incident type 2 diabetes: pooled analysis of individual-level data for 39,740 adults from 20 prospective cohort studies. Lancet Diabetes Endocrinol 2017; 5: 965–74. October 11, 2017.
Author
Written by Anuolu Bank-Oni, Pharm.D, CDE, BCGP.