Introduction and purpose Long-chain ω-3 PUFAs such as DHA and EPA are often present in high amounts in algae and fish. DHA in particular is crucial for the proper development and functioning of the brain because it is the main structural component of ω-3 PUFA in the brain. This makes it an indispensable element of the phospholipids of the nervous membrane. The purpose of this article is to present the benefits of Omega-3 acids in the functioning of the nervous system. State Of knowledge The text discusses a literature review focusing on the impact of omega-3 fatty acids. Polyunsaturated fatty acids (PUFAs) are essential for overall health and have been extensively studied for their contributions to human well-being and disease management. Recent research indicates their effectiveness in preventing and treating various diseases. Omega-3 PUFAs have been identified as therapeutic agents, particularly in combating inflammatory conditions like cardiovascular and neurodegenerative diseases. Material and method The aim of this article is to present the benefits of omega-3 fatty acids supplementation. Publications outlining properties of polyunsaturated fatty acids on the brain. articles presenting the effects of polyunsaturated fatty acids were reviewed using the Pubmed platform. The review included the keywords "Omega-3 fatty acids" "DHA" "EPA" "PUFA".