美國西北大學費恩柏格醫學院(Feinberg School of Medicine, Northwestern University)進行的研究發現，富含γ-生育酚形式的維生素E食用油可加劇氣道炎症反應，增加氣道高反應性，甚至誘發哮喘或損害肺功能。數據來自CARDIA觀察性研究。作者指出，維生素E的形式不同，對人的健康效應則不同。維生素E在芥花籽油、大豆油和玉米油等油中是以γ-生育酚的形式出現，它降低肺功能。而橄欖油、麥胚油、杏仁油和葵花籽油中的維生素E是α-生育酚形式，效果正好相反，有助於改善肺功能。
學院新聞: Vitamin E in Canola and Other Oils Hurts Lungs
論文長文: http://respiratory-research.com/content/pdf/1465-9921-15-31.pdf
Vitamin E in Canola and Other Oils Hurts Lungs
Increase in asthma coincides with switch from butter to certain oil-based diets
May 20, 2014 | by Marla PaulHIGHLIGHTS
- A form of Vitamin E in soybean, corn and canola oils decreases lung function in humans
- Vitamin E in olive and sunflower oils improves lungs
- U.S. diets have switched from lard and butter to soybean, canola and corn oils
CHICAGO --- A large new Northwestern Medicine® study upends our understanding of vitamin E and ties the increasing consumption of supposedly healthy vitamin E-rich oils -- canola, soybean and corn – to the rising incidence of lung inflammation and, possibly, asthma.
The new study shows drastically different health effects of vitamin E depending 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 associated with better lung function.
“Considering the rate of affected people we found in this study, there could be 4.5 million individuals in the U.S. with reduced lung function as a result of their high gamma-tocopherol consumption,” said senior author Joan Cook-Mills, an associate professor of medicine in allergy/immunology at Northwestern University Feinberg School of Medicine.
This is the first study to show gamma-tocopherol is associated with worse lung function.
Cook-Mills presented her research in May at the Oxidants and Antioxidants in Biology World Congress. It was also published in the journal Respiratory Research.
......
Vitamin E in Canola and Other Oils Hurts Lungs
Increase in asthma coincides with switch from butter to certain oil-based diets
May 20, 2014 | by Marla PaulHIGHLIGHTS
- A form of Vitamin E in soybean, corn and canola oils decreases lung function in humans
- Vitamin E in olive and sunflower oils improves lungs
- U.S. diets have switched from lard and butter to soybean, canola and corn oils
CHICAGO --- A large new Northwestern Medicine® study upends our understanding of vitamin E and ties the increasing consumption of supposedly healthy vitamin E-rich oils -- canola, soybean and corn – to the rising incidence of lung inflammation and, possibly, asthma.
The new study shows drastically different health effects of vitamin E depending 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 associated with better lung function.
“Considering the rate of affected people we found in this study, there could be 4.5 million individuals in the U.S. with reduced lung function as a result of their high gamma-tocopherol consumption,” said senior author Joan Cook-Mills, an associate professor of medicine in allergy/immunology at Northwestern University Feinberg School of Medicine.
This is the first study to show gamma-tocopherol is associated with worse lung function.
Cook-Mills presented her research in May at the Oxidants and Antioxidants in Biology World Congress. It was also published in the journal Respiratory Research.
Vitamin E in Canola and Other Oils Hurts Lungs
Increase in asthma coincides with switch from butter to certain oil-based diets
May 20, 2014 | by Marla PaulHIGHLIGHTS
- A form of Vitamin E in soybean, corn and canola oils decreases lung function in humans
- Vitamin E in olive and sunflower oils improves lungs
- U.S. diets have switched from lard and butter to soybean, canola and corn oils
CHICAGO --- A large new Northwestern Medicine® study upends our understanding of vitamin E and ties the increasing consumption of supposedly healthy vitamin E-rich oils -- canola, soybean and corn – to the rising incidence of lung inflammation and, possibly, asthma.
The new study shows drastically different health effects of vitamin E depending 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 associated with better lung function.
“Considering the rate of affected people we found in this study, there could be 4.5 million individuals in the U.S. with reduced lung function as a result of their high gamma-tocopherol consumption,” said senior author Joan Cook-Mills, an associate professor of medicine in allergy/immunology at Northwestern University Feinberg School of Medicine.
This is the first study to show gamma-tocopherol is associated with worse lung function.
Cook-Mills presented her research in May at the Oxidants and Antioxidants in Biology World Congress. It was also published in the journal Respiratory Research.
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