Back in the 1980, all fats were considered to be unhealthy. Then, we started distinguishing between good fats and bad fats. Healthy fats include certain unsaturated fats like the monounsaturated fats in olive oil and Omega-3 fatty acids. Sources of Omega-3s fats includes fish, fish oil, canola oil, flaxseeds, and a few other seeds and nuts. Omega-3 fatty acids are widely used to help reduce inflammation and blood clotting. They are also important for skin health and mood. Omega-3 oils support the brain and are associated with healthier brains as we age.
It has long been argued that consuming fish or other Omega-3 sources is good for the heart. Some studies have confirmed this, but others showed no results. A recent well-conducted study seems to have solidly demonstrated the benefits of Omega-3 for the heart and overall longevity. Of over 2000 participants over 65 years old, those with the highest blood levels of Omega-3s had a 27% lower risk of death compared to those with the lowest levels during the 15 years they were tracked. This corresponded to the people with the higher levels of Omega-3s living 2 years longer on average. The largest effect was a 50% reduction in deaths due to cardiac arrhythmias, which are irregular heartbeats that can be live threatening. The difference between this and previous studies is this study measured the amount of Omega-3 fatty acids in the blood of the participants, while other studies had relied on dietary recall of what participants were eating or used questionable quality fish oil supplements. Many prescription and supplemental fish oils are modified from their natural form and may not be absorbed well. It is argued that fish oils that occur in their natural form, know as triglycerides, will be much better absorbed. This is one of the reasons I recommend brand that make sure their oils are in the natural triglyceride form like Nordic Naturals.