Which omega fatty acids are considered essential and must be obtained from our diet?

Omega-3 and omega-6 fatty acids are classified as essential fatty acids because they cannot be synthesized by the human body and must be obtained through the diet. These fatty acids play crucial roles in various physiological processes, including inflammatory responses, cell membrane integrity, and brain function. Omega-3 fatty acids, which include alpha-linolenic acid (ALA), are found in sources such as fish, flaxseeds, and walnuts. Omega-6 fatty acids such as linoleic acid (LA) are commonly found in vegetable oils, nuts, and seeds.

In contrast, omega-7 and omega-9 fatty acids are not considered essential because the body can synthesize them. Similarly, omega-5 and omega-11 are not recognized as essential fatty acids in the same way that omega-3 and omega-6 are. Therefore, the necessity to obtain omega-3 and omega-6 from the diet makes them essential for maintaining optimal health.