It is important to note some of the health benefits than can be obtained through supplementing with omega 3 fish oil.
In the same token it’s not a magic pill and it’s effects on improving body composition are often over exaggerated, an energy deficit is still required for fat loss, despite supplementing with omega 3 fish oil.
On the contrary, there can also be negative effects with super high doses of fish oil supplementation. You may or may not be aware of Charles Poliquins mega dosing protocols of 30g-60g of fish oil per day. Despite evidence to suggest super high levels of EPA and DHA have been well-documented to suppress the body’s immune response.
Here are a few further points from by Alan Aragon regarding the topic:
“Looking at the body of evidence as a whole, fish oil (or increased fish consumption) has great potential for improving cardiovascular health. But for reducing body fat, the effects are minor to nonexistent. Let’s not forget that fish oil isn’t some magical negative-calorie food. It still contains 9 calories per gram, and no matter how much of those calories are used in its processing within the body, it’s still a net gain in calories after consumption. To sum everything up, fish oil has health benefits, as well as potential risks. It’s certainly not a matter of more-is-better. It might have minor fat loss effects in the obese and overweight population, but their fat loss effect in general is far from conclusively established. Get a variety of fats in your diet, and get them from whole foods whenever possible. Fish oil is merely one of many agents that can contribute to optimal health within the context of well-balanced nutrition. Keep it in perspective, and keep your eye on the facts.”