Canola oil, soybean oil, and corn oil all have been demonized. I get that lard is now considered “safe”, then there’s peanut oil, avocado oil, and grapeseed oil, all of which are twice the price, or more, than vegetable oil. I buy olive oil for salads and some cooking, but there’s no guarantee it’s not adulterated with cheap vegetable oil, unless I buy the really pricy Italian brands, which I can’t afford.. I very occasionally buy peanut oil, but for $17 A gallon, it doesn’t go far for deep frying. So, I’ll stick to vegetable oil and hope there’s more cottonseed than soybean in it.
According to ConsumerLab.com, there was only one major olive oil you could trust: “California Olive Ranch 100% California Extra Virgin Olive Oil.”
Researched and exposed would be more correct.
https://draxe.com/nutrition/canola-oil/ "1. Heart health
"Canola is marketed as a heart-healthy fat, but is it?
A 2018 study noted that participants who were overweight/obese and had a higher consumption of canola oil were more likely to have metabolic syndrome. This flies in the face of a 2013 report (funded by the Canola industry) that determined that canola oil lowered the risk of cardiovascular disease.
The 2018 study authors write that a “potential reason for the conflicting findings is that most of the studies included in that review used raw oil which restricts the interpretation of these studies, because canola oil is mostly used for frying, and heat can cause the loss of some of the beneficial components such as α-linolenic acid.”
A 2019 meta-analysis published in the Journal of the American College of Nutrition considered 27 trials comprising 1,359 participants. Results showed that canola oil consumption reduced total cholesterol and low-density lipoprotein cholesterol (LDL or “bad” cholesterol), especially compared to sunflower oil and saturated fat. Meanwhile, canola oil had no impact on other blood lipids such as high-density lipoprotein cholesterol (HDL), triglycerides, apolipoprotein A1 and apolipoprotein B."
1. Heart health
2. Hypertension and Strokes
Previous studies have shown that the consumption of rapeseed oil and some other types of vegetable oils shortens the life span of stroke-prone and hypertensive animal subjects. Specifically, research carried out at the Nutrition and Toxicology Research Divisions of Ottawa discovered that rats bred to have high blood pressure and proneness to stroke died sooner when fed canola oil as the sole source of fat.
Additionally, the rats fed the non-canola oil-based diets lived longer than the rats fed canola oil.
Another study published in 2000 in Toxicology Letters specifically examined the effects of canola oil on blood coagulation time or how long it takes blood to clot in stroke-prone animal subjects. The study found that there was a “canola oil-induced shortening of blood coagulation time and increased fragility in [red blood cell membranes],” which may promote the occurrence of strokes in animal subjects that are stroke-prone.
3. Inflammation
Chronic inflammation is a health concern for many, and numerous animals studies point to canola oil increasing inflammation and oxidative stress.
A 2020 study that used a large yellow croaker fish, the researched noticed that a higher percentage of canola oil in the diet could hamper growth performance and liver health plus create more inflammation. 4. May Affect Memory
A 2017 study on mice found that chronic exposure to a canola-rich diet created both a significant increase in body weight along with memory problems. Authors went on to say that their findings did not support replacing olive oil with canola oil for most people."
One of the problems with Rape seed oil is that it has erucic acid (even as lower levels) that over time slowly damages the mylin sheath of nerves so it makes sense it might affect your memory.
I buy Greek or Spanish olive oil. The ones I have purchased are expensive but I use them sparingly.