Best Heart Benefits From Canola and Fish Oils -- Not Olive Oil
"The olive oil meal caused vessels to constrict by 34%, whereas the canola oil and salmon meals caused insignificant changes in blood vessels, Vogel reports. Because such constrictions injure the blood vessels' endothelium, they contribute to heart disease."
What Is Atherosclerosis?
Plaque is made up of fat, cholesterol, calcium, and other substances found in the blood. Over time, plaque hardens and narrows your arteries. This limits the flow of oxygen-rich blood to your organs and other parts of your body.
Atherosclerosis can lead to serious problems, including heart attack, stroke, or even death."
The omega 3 fatty acids from foods such as fish in the diet can improve the endothelial function, and therefore prevent the olive oil from constricting and damaging the endothelium.
Effect of omega-3 fatty acids supplementation on endothelial function: a meta-analysis of randomized controlled trials.
"Supplementation of omega-3 fatty acids significantly improves the endothelial function without affecting endothelium-independent dilation."
The postprandial effect of components of the Mediterranean diet on endothelial function.
"CONCLUSIONS: In terms of their postprandial effect on endothelial function, the beneficial components of the Mediterranean and Lyon Diet Heart Study diets appear to be antioxidant-rich foods, including vegetables, fruits, and their derivatives such as vinegar, and omega-3-rich fish and canola oils."
Beneficial fats that contain high amounts of omega 3 can be found in foods like tofu, soya beans, soybean oil, soymilk, flaxseeds, walnuts etc. A good balance of omega 3 and 6 is already found in soybeans but if one can choose to consume flaxseeds to gain more omega 3 fats.