What is a major source of omega-6 fatty acids in the diet?

Soybean oil is a major source of omega-6 fatty acids in the diet due to its high linoleic acid content, which is a type of omega-6 fatty acid. Omega-6 fatty acids are essential fats that the body cannot produce on its own, meaning they must be obtained through diet. Soybean oil is commonly used in cooking and food processing, making it a prevalent source in many people's diets.

Other oils and foods listed have different fatty acid profiles. Fish oil is primarily known for its high omega-3 fatty acid content, which is beneficial for heart health and reducing inflammation. Olive oil is rich in monounsaturated fats and contains some omega-6 fatty acids, but it is not known as a major source of them compared to soybean oil. Flaxseed oil is another source of omega-3 fatty acids, primarily alpha-linolenic acid, rather than omega-6.

Thus, soybean oil stands out as a key contributor of omega-6 fatty acids in various western diets, aligning with its common usage and nutritional composition.