Omega-3 fatty acids are essential fatty acids. This means that our body cannot produce them itself and we have to get them from food. They help our body fight inflammation and support brain function and joint health, among other things. Omega-3 fatty acids occur naturally in algae, oily fish, walnuts and flaxseed. DHA and EPA are two different types of omega-3 fatty acids that are particularly helpful in fighting inflammation. Omega-6 fatty acids are also essential for the human body, but the average person's modern Western diet contains more than necessary. Omega-6 fatty acids are found in a variety of foods, including vegetable oils, nuts and seeds. Although omega-6 fatty acids have been described as "pro-inflammatory", a balance of omega-6 intake to omega-3 is particularly important for health.