Fish oil may increase the risk of fatty liver disease later in life. Non-alcoholic steatohepatitis is a type of liver disease caused by the buildup of fat unrelated to consumption of alcohol; some of the biggest risk factors include obesity, high blood pressure, and high cholesterol, so it is clearly greatly influenced by diet and fat consumption. With this in mind, Professor José Luis Quiles and his colleagues at Spain’s University of Granada set out to discover the comparable effects of sunflower oil, fish oil, and virgin olive oil on the liver. In this study, where researchers analyzed rats over the entire course of their lives, they found that olive oil was the best option for liver health. Lifelong consumption of sunflower oil and fish oil led to liver fibrosis (scarring) and impaired cell function in the organ. However, fish oil has already been proven to benefit your health in numerous other ways, such as memory and mental health benefits, heart and cardiovascular health improvement, a decrease in postpartum depression, and better vision. Therefore, like most things, the key is moderation, and you can decide how much fish oil you want to incorporate into your diet based on your individual health concerns. 

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