What is the main source of omega-3 fatty acids?

Study for the SACE Stage 1 Nutrition Exam. Dive into questions designed to test your understanding. Prepare confidently with detailed explanations and structured practice.

Omega-3 fatty acids are essential fats that the body cannot produce on its own, which means they must be obtained through the diet. The primary sources of omega-3 fatty acids include fatty fish, flaxseeds, and walnuts. Fatty fish such as salmon, mackerel, and sardines are particularly high in two types of omega-3 fatty acids, EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), which are known for their beneficial effects on heart health and brain function.

Flaxseeds and walnuts contain ALA (alpha-linolenic acid), which is another form of omega-3 fatty acid that the body can convert into EPA and DHA, although the conversion rate is not very efficient. Including these foods in a balanced diet is essential for maintaining optimal health, particularly for cardiovascular and cognitive functions.

Other options such as red meat, processed snacks, and eggs and dairy products do not provide significant amounts of omega-3 fatty acids, and they often contain different types of fats, such as saturated fats, which are generally considered less beneficial for health compared to the polyunsaturated fats found in the main sources of omega-3 fatty acids.

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