Martin Grootveld, a professor of bioanalytical chemistry and chemical pathology, said that his research showed “a typical meal of fish and chips”, fried in vegetable oil, contained as much as 100 to 200 times more toxic aldehydes than the safe daily limit set by the World Health Organisation.
In contrast, heating up butter, olive oil and lard in tests produced much lower levels of aldehydes. Coconut oil produced the lowest levels of the harmful chemicals.
Concerns over toxic chemicals in heated oils are backed up by separate research from a University of Oxford professor, who claims that the fatty acids in vegetable oils are contributing to other health problems.
Professor John Stein, Oxford’s emeritus professor of neuroscience, said that partly as a result of corn and sunflower oils, “the human brain is changing in a way that is as serious as climate change threatens to be”.
• Just one steak a week ‘can increase risk of bowel cancer’
• Mothers ‘reduce risk of ovarian cancer with every child’
• The 116 things that can give you cancer
• The oil guide: which to use for frying, drizzling and roasting
Because vegetable oils are rich in omega 6 acids, they are contributing to a reduction in critical omega 3 fatty acids in the brain by replacing them, he believes.
“If you eat too much corn oil or sunflower oil, the brain is absorbing too much omega 6, and that effectively forces out omega 3,” said Prof Stein. “I believe the lack of omega 3 is a powerful contributory factor to such problems as increasing mental health issues and other problems such as dyslexia.”
He said sunflower oil and corn oil were now banished from his own kitchen, replaced by olive oil and butter.
Public Health England says saturated fats, including butter and coconut oil “can be eaten occasionally in small amounts as part of a healthy balanced diet”.
Paola Aag
May 12. 2016
What about Grapeseed oil?
Denise L Siedlecki
May 12. 2016
no wonder there is cancer in so many people
Alles Paletti
May 12. 2016
Famerdt.Kyaniviral.Com/triangle
Shondra Phillips Ploof
May 12. 2016
Wade White Kasey White Denise Perry Kelly Phillips Tolbert
Denise Perry
May 12. 2016
I normally use canola or olive oil. Never vegetable oil.
Shondra Phillips Ploof
May 12. 2016
So no to canola too!! Lol
Denise Perry
May 12. 2016
Really
Patricia Fleming
May 13. 2016
Canola is man made. Reading it is a no also.
Patricia Fleming
May 13. 2016
For some things this oil is great but I think it has a low smoking point though, so not for healthier frying. We all need to read more I think.