Can taking fish oil prevent brain cancer?

Deep-sea fish oil (Omega-3) is a popular nutritional supplement in today's society because it has the effect of lowering cholesterol. However, some people also claim that eating deep-sea fish oil can reduce the risk of cancer. Is this true? Can eating fish oil prevent brain cancer?

Greenland is located in the Arctic Ocean, a silver world of ice and snow. The indigenous Eskimos living on the island make a living by fishing, and it is extremely difficult for them to eat fresh vegetables and fruits. According to medical common sense, eating animal fats and eating less vegetables and fruits is prone to cardiovascular and cerebrovascular diseases. But in fact, it is just the opposite. The Eskimos are not only very healthy, but it is also difficult to find diseases such as hypertension, coronary heart disease, stroke, diabetes, rheumatoid arthritis, and cancer among them.
This incredible phenomenon also occurred in fishermen on an island in Japan. Is it just a coincidence? Is there a necessary connection? Scientists have aroused great interest in this. After more than ten years of dedicated research, they finally found the answer. It turns out that it is related to the substances contained in the marine fish they eat every day, namely EPA and DHA. The discovery of these two substances has brought major breakthroughs in medicine and nutrition.