People can also use flaxseed oil instead of other oils or butter for cooking. Flaxseed oil is sensitive to heat so cooking with it will change the nutritional properties. Flaxseed oil has other components that bolster our overall health as well. It includes proteins that help decrease heart disease risk factors. The fiber within it helps combat constipation. Flaxseed oil also has within it minerals our bodies need like calcium magnesium and phosphorus. And best of all flaxseed oil contains phenolic compounds to help protect us from cancer.