- Fish oil tablets contain omega-3 fatty acids which are known to reduce inflammation throughout the body and may have other health benefits. According to Wikipedia the omega-3 fatty acids in fish oil are thought to be beneficial in treating hypertriglyceridemia, and possibly beneficial in preventing heart disease. Fish oil and omega-3 fatty acids have been studied in a wide variety of other conditions, such as clinical depression, anxiety, cancer, and macular degeneration, although benefit in these conditions remains to be proven. I'm taking no chances, I take my fish oil every day. Canon 7D, 1/800 sec @ f/11.0, ISO 800, 100mm macro, photographed on a light table.