Now that’s a scary headline, isn’t it? You’ve probably seen similar headlines over the last few days as even some of the major news outlets have been talking about it. What’s especially troubling is that canola oil has been marketed as being a “healthy” oil for many years now, and it is in very wide spread use around the world. So the possibility that it is linked to something as scary as dementia is pretty serious.
What is canola in the first place? Well, in a way “canola” doesn’t really exist. It actually a variety of rapeseed. The term “rape” comes from the Latin word “rapum”, which means turnip. Rapeseed is related to turnip, rutabaga, cabbage and mustard. We’ve been using plants in this family for oil for thousands of years. It seems that rapeseed oil in the first half of the 20th century was used more as a lubricant than as a food product. Production in Canada increased enormously curing WWII.
After the war demand fell drastically and farmers began to look for other uses. Rapeseed oil was brought to the market in the mid 1950s as a food product, but it had some problems. It had a nasty green color and tasted pretty bad. Even worse, it had a high concentration of erucic acid. Animal experiments indicated that consuming large quantities of erucic acid caused heart damage.
In the 1970s Canadian researchers bred a variety of rapeseed that had far fewer objectionable qualities and far less erucic acid. The term “canola” was originally a trademark name for the new variety, made out of “Can” for Canada, and “ola” from other vegetable oils like Mazola.
Modern canola oil is considered, or was considered before this study came along, to actually be fairly healthy. But now…
How concerned should we be about this? This was just one study and more research needs to be done, but it still is something we need to be concerned about. Dementia is very scary and anything that increases the risk of getting it needs to be avoided if at all possible. To be honest, I’m not going to be buying canola oil after this. There are other oils out there with similar smoke points and nutrition profiles that can be used instead.