A large study may upend our understanding of vitamin E, a vital antioxidant, and ties the increasing consumption of supposedly healthy vitamin E-rich oils such as canola, soybean and corn to the rising incidence of lung inflammation and, possibly, asthma.
The different health effects of vitamin E depend on its form. The form of Vitamin E called gamma-tocopherol in the ubiquitous soybean, corn and canola oils is associated with decreased lung function in humans, the study reports. The other form of Vitamin E, alpha-tocopherol, which is found in olive and sunflower oils, does the opposite. It's associated with better lung function.