„They may or may not play a role in inflammation (the research picture is mixed)“
You’ve probably seen recent claims online seed oils are „toxic“ and cause inflammation, cancer, diabetes and heart disease. But what does the research say?
Overall, if you’re worried about inflammation, cancer, diabetes and heart disease there are probably more important things to worry about than seed oils.
They may or may not play a role in inflammation (the research picture is mixed). What we do know, however, is that a high-quality diet rich in unprocessed whole foods (fruits, vegetables, nuts, seeds, grains and lean meats) is the number one thing you can to do reduce inflammation and your risk of developing diseases.
Rather than focusing on seed oils specifically, reduce your intake of processed foods more broadly and focus on eating fresh foods. So don’t stress out too much about using a bit of seed oils in your cooking if you are generally focused on all the right things.
Seed oils are made from whole seeds, such as sunflower seeds, flax seeds, chia seeds and sesame seeds. These seeds are processed to extract oil.
The most common seed oils found at grocery stores include sesame oil, canola oil, sunflower oil, flaxseed oil, corn oil, grapeseed oil and soybean oil.
Seed oils are generally affordable, easy to find and suitable for many dishes and cuisines as they often have a high smoke point.
However, most people consume seed oils in larger amounts through processed foods such as biscuits, cakes, chips, muesli bars, muffins, dipping sauces, deep-fried foods, salad dressings and margarines.
These processed foods are „discretionary“, meaning they’re OK to have occasionally. But they are not considered necessary for a healthy diet, nor recommended in our national dietary guidelines, the Australian Guide for Healthy Eating.
There are two essential types of omega fatty acids: omega-3 and omega-6. These are crucial for bodily functions, and we must get them through our diet since our bodies cannot produce them.
While all oils contain varying levels of fatty acids, some argue an excessive intake of a specific omega-6 fatty acid in seed oils called „linoleic acid“ may contribute to inflammation in the body.
