Resources and Bioactivities of Polyunsaturated Fatty Acids

Polyunsaturated fatty acids are essential to human health, in particular ω-3 polyunsaturated fatty acids. However, they can not be produced by the body, and only can be obtained from the dietary sources such as vegetable oils, fish oils, and microalgae. Polyunsaturated fatty acids possess antioxidant, anti-inflammation and antibacterial activities, and have positive health effects in the treatment of chronic diseases, such as cardiovascular disease, type 2 diabetes, some cancers, and obesity. This review summarizes current knowledge about dietary sources and bioactivities of polyunsaturated fatty acids, and special attention is paid to the bioactivities.