Canola oil has been associated with fibrotic heart lesions and lung cancer, and it contains trans fatty acids that contribute to heart disease, according to Breathing.com. In 1985, the Food and Drug Administration outlawed canola oil in infant formulas due to its role in growth retardation.
Canola oil can be detrimental to health due to the deodorizing process producers use to form the compound. Originating from rapeseed oil, the substance is processed for removal of its original smell and for longer product durability. Byproducts of this process deplete vitamin E stores and raise blood triglyceride levels by over 40 percent in consumers of canola oil. Canola oil also reverses the function of natural antioxidants and restricts enzyme productivity.