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At first I discounted this material sent to me by a friend this link.
http://www.tidesoflife.com/canola.htm
But after some articles he sent me I can see it is real.
If you do a search for canola and danger on the internet, a similar letter/article turns up.
After doing a search, somehow, I ended up on about.com. They purport that it is a hoax. If this is a hoax, this is one of the most wide spread and commonly passed. Part of the reason is that many "so-called" health nutrient vendors simply post this without checking the facts. I dismissed it because the article has no external links to verify the purported claims.
http://urbanlegends.about.com/library/blcanola.htm?once=true&
Here is another version that looks authoritative, but is apparently the type of story about.com is talking about.
http://www.fourwinds10.com/news/06-health/C-harmful-products/2003/06C-02-09-03-canola-oil.html
Lastly, Health Central has a
story about this hoax.
http://www.healthcentral.com/drdean/408/16307.html
Apparently this story may have been mixed IN with this other story.
Read EPISODES OF ENVIRONMENTAL POISONING WORLDWIDE. Scroll down to the story on Toxic oil syndrome. http://oem.bmjjournals.com/cgi/content/full/59/12/855
Then my friend sent me these articles.
Abtstract: A study on genotoxicity of cooking fumes from rapeseed oil.
The present article reports the genotoxic potential of rapeseed oil cooking fume investigated by a battery of short-term tests ... The results suggested that this cooking fume exposure may be a risk factor of lung cancer in Chinese women.
Via PubMed
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1449658&dopt=Abstract
News Article Archive: Rapeseed Frankencrops in Canada Breed Superweeds GM fields spread new superweeds
http://www.organicconsumers.org/patent/superweeds081301.cfm
From: FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Animal Feed Resources Information System
Brassica rapa, Brassica napus
Rapeseed oilcake contains compounds that are potentially toxic to certain age groups or classes of livestock and poultry.
http://www.fao.org/ag/aga/agap/frg/afris/Data/492.HTM
Canola meal, Rapeseed meal, 00-Rapeseed, 0-Rapeseed
Rapeseed or canola are members of the cabbage family (Brassicas or Crucifers), which family also contains plants, such as, mustard, turnips, and kale. It is suitable to be grown in regions that have colder climatic conditions and are unsuitable for growing soybean and cottonseed, such as, Northern Europe, China, India, Canada, higher and colder areas of South America. Rapeseed contains several anti-quality factors (...) which can cause liver damage (...), (...); decrease performance and feed consumption (...), (...); and can have a negative effect on reproductive performance (...).
http://www.fao.org/ag/aga/agap/frg/afris/Data/724.HTM
Many of the articles that look like Hoaxes may have taken information from this article. This one is complete and makes sense.
It makes sense, but it does not references any online sources.
Canola (Rapeseed)/Coconut/Argan Oils
http://www.annieappleseedproject.org/canoilrap.html
Research Review: The Spanish Toxic Oil Syndrome 20 Years after Its Onset: A Multidisciplinary Review of Scientific Knowledge.
Abstract: In 1981, in Spain, the ingestion of an oil fraudulently sold as olive oil caused an outbreak of a previously unrecorded condition, later known as toxic oil syndrome (TOS), ...
http://ehp.niehs.nih.gov/members/2002/110p457-464gelpi/gelpi-full.html
Article: Neuropathological studies on the toxic syndrome related to adulterated rapeseed oil in Spain
Biopsies of muscle and sural nerves, and autopsies of patients affected by the toxic and neuromuscular syndrome produced by ingestion of adulterated rapeseed oil were studied using ...
http://brain.oupjournals.org/cgi/content/abstract/106/4/817
For authoritative information on vegetable and animal oils, read Udo Erasmus's book Fats That Heal Fats That Kill
ALSO: The Wikipedia information on Canola
http://en.wikipedia.org/wiki/Canola
ALSO: The Wikipedia information on Rapeseed
http://en.wikipedia.org/wiki/Rapeseed
ALSO: The Everything2 information on Canola
http://everything2.com/index.pl?node_id=697693