What are omega-3 fatty acids?
Omega-3 fatty acids are essential fats that the body cannot produce and therefore must be obtained from food or dietary supplements. The three main types of omega-3 fatty acids are ALA (alpha-linolenic acid), which is found in vegetable oils such as flaxseed and walnuts, and EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), which are found primarily in fish and seafood. These fats have been the focus of scientific interest since the 1970s, when researchers discovered that the Greenlandic Inuit, whose diet was rich in omega-3 fatty acids from fish, had very low rates of heart disease. Since then, some 20,000 scientific papers and about 2,500 clinical trials have been published on omega-3 fatty acids, highlighting their importance for various aspects of health. Omega-3 fatty acids play a critical role in maintaining heart health, supporting cognitive function, and reducing inflammation in the body. Because of their many benefits, omega-3 fatty acids are considered an essential part of a balanced diet, especially as we age.
Potential health benefits
Omega-3 fatty acids, particularly EPA and DHA, may provide numerous health benefits, particularly for cardiovascular and brain health. The European Food Safety Authority (EFSA) has validated several health claims, including that EPA and DHA may contribute to normal heart function, maintain healthy blood pressure, and support brain health. One of the most important findings came from a meta-analysis of 34 studies involving more than 825,000 participants, which showed that daily intake of EPA and DHA may reduce the risk of coronary heart disease. These benefits are more pronounced at higher doses, especially above 1 gram per day. In response to these findings, the American Heart Association recommends a daily intake of at least 1 gram of EPA and DHA to support cardiovascular health. In addition, omega-3 fatty acids may reduce inflammation, lower triglyceride levels, and improve blood lipid levels. They are also associated with improved cognitive function, particularly in people with heart disease, and may help alleviate symptoms of depression. Omega-3 fatty acids have been shown to reduce pain and improve joint function in conditions such as arthritis, making them a valuable part of a healthy diet.