Omega-3 fatty acids help all the cells in your body function as they should. They’re a vital part of your cell membranes, helping to provide structure and supporting interactions between cells. While they’re important to all your cells, omega-3s are concentrated in high levels in cells in your eyes and brain.
In addition, omega-3s provide your body with energy (calories) and support the health of many body systems. These include your cardiovascular system and endocrine system.
What are examples of omega-3 fatty acids?
There are three main types of omega-3 fatty acids:
EPA (eicosapentaenoic acid). EPA is a “marine omega-3” because it’s found in fish.
DHA (docosahexaenoic acid). DHA is also a marine omega-3 found in fish.
ALA (alpha-linolenic acid). ALA is the form of omega-3 found in plants.
Omega-3s are essential nutrients that you need to get from your diet. When you get ALA from food, your body is able to turn some of the ALA into EPA and subsequently to DHA. However, this process provides just a small amount of EPA and DHA. So, dietary sources of EPA and DHA (like fish) are essential.