Olive oil versus canola oil

Olive oil versus canola oil

Do not fall into the hype which is put out by traditional medicine regarding the promotion of canola oil (rapeseed) as superior due to its concentration of monounsaturated fatty acids. Olive oil is far superior and has been around for thousands of years. Canola oil is a relatively recent development and the original crops were unfit for human consumption due to their high content of a dangerous fatty acid called euric acid.
If the taste of olive oil is a problem, or if you are frying or sautéing food, then you should consider coconut oil. Many nutritionally misinformed people would consider this unwise due to coconut oil's nearly exclusive content of saturated fat. However, this is just not the case. Because it has mostly saturated fat, it is much less dangerous to heat. The heat will not tend to cause the oil to transition into dangerous trans fatty acids.

Olive oil comes from olives, peanut oil from peanuts, sunflower oil from sunflowers; but what is a canola? 
Canola is not the name of a natural plant but a made-up word, from the words "Canada" and "oil". Canola is a genetically engineered plant developed in Canada from the Rapeseed Plant, which is part of the mustard family of plants. According to AgriAlternatives, The Online Innovation, and Technology Magazine for Farmers, "By nature, these rapeseed oils, which have long been used to produce oils for industrial purposes, are... toxic to humans and other animals". 
Rapeseed oil is poisonous to living things and is an excellent insect repellent. I have been using it (in very diluted form, as per instructions) to kill the aphids on my roses for the last two years. It works very well; it suffocates them. Ask for it at your nursery. Rape is an oil that is used as a lubricant, fuel, soap and synthetic rubber base and as a illuminate for color pages in magazines. It is an industrial oil.
It is not a food.
Rape oil is strongly related to symptoms of emphysema, respiratory distress, anemia, constipation, irritability, and blindness in animals and humans. Rape oil was widely used in animal feeds in England and Europe between 1986 and 1991, when it was discontinued. 
A few relevant facts

It is genetically engineered rapeseed. Canada paid the FDA the sum of $50 million to have rape registered and recognized as "safe". (Source: Young Again and others)
Rapeseed is a lubricating oil used by small industry. It has never been meant for human consumption.
It is derived from the mustard family and is considered a toxic and poisonous weed, which when processed, becomes rancid very quickly.
It has been shown to cause lung cancer (Wall Street Journal: 6/7/95)
It is very inexpensive to grow and harvest. Insects won't eat it.
Some typical and possible side effects include loss of vision, disruption of the central nervous system, respiratory illness, anemia, constipation, increased incidence of heart disease and cancer, low birth weights in infants and irritability.
Generally rapeseed has a cumulative effect, taking almost 10 years before symptoms begin to manifest. It has a tendency to inhibit proper metabolism of foods and prohibits normal enzyme function. Canola  contains  Trans Fatty Acids. Trans fatty acids have been shown to have a direct link to cancer. shown to have a direct link to cancer.
Foods (including oils) are often labeled as containing trans fatty acids. However any  food which says it contains hydrogenated or partially hydrogenated oils contains trans fatty acids: Hydrogenation is just the process in which
trans fats are formed (literally hydrogenation means adding hydrogen). These Trans Fatty acids are labeled as hydrogenated or partially hydrogenated oils. Avoid all of them!