Some 'healthy' vegetable oils may actually increase risk of heart disease

November 11, 2013

Some vegetable oils that claim to be healthy may actually increase the risk of heart disease, and Health Canada should reconsider cholesterol-lowering claims on food labelling, states an analysis in CMAJ (Canadian Medical Association Journal).

Replacing saturated animal fats with polyunsaturated has become common practice because they can reduce serum cholesterol levels and help prevent . In 2009, Health Canada's Food Directorate, after reviewing published evidence, approved a request from the food industry to apply a heart disease risk reduction claim on vegetable oils and foods containing these oils. The label suggests "a reduced risk of heart disease by lowering ."

"Careful evaluation of recent evidence, however, suggests that allowing a health claim for vegetable oils rich in omega-6 linoleic acid but relatively poor in omega-3 α-linolenic acid may not be warranted," write Drs. Richard Bazinet, Department of Nutritional Sciences, University of Toronto and Michael Chu, Lawson Health Research Institute and Division of Cardiac Surgery, Western University, London, Ontario.

Corn and safflower oil, which are rich in omega-6 linoleic acid but contain almost no omega-3 α-linolenic acid, are not associated with beneficial effects on heart health according to recent evidence. The authors cite a study published earlier this year in February 2013 "… in which the intervention group replaced saturated fat with sources of safflower oil or safflower oil margarine (rich in omega-6 linoleic acid but low in omega-3 α-linoleic acid). They found that the intervention group had serum cholesterol levels that were significantly decreased (by about 8%

Explore further: Vegetable oil IS good for you, researcher says

More information: www.cmaj.ca/lookup/doi/10.1503/cmaj.130253

Related Stories

Vegetable oil IS good for you, researcher says

June 7, 2013
A typical American consumes approximately 3 or more tablespoons of vegetable oil each day. Vegetable oils, like those from soy, corn and canola, are a significant source of calories and are rich in linoleic acid (LA), which ...

Study raises questions about dietary fats and heart disease guidance

February 5, 2013
Dietary advice about fats and the risk of heart disease is called into question in BMJ today as a clinical trial shows that replacing saturated animal fats with omega-6 polyunsaturated vegetable fats is linked to an increased ...

Study: Omega 6 fats may pose dangers

February 22, 2013
New research is challenging widely held beliefs about the dietary benefits of unsaturated fats, showing that some types long considered healthy, such as corn and safflower oil, may actually harm people with heart problems.

Monosaturated fats reduce metabolic syndrome risk

March 29, 2013
Canola oil and high-oleic canola oils can lower abdominal fat when used in place of other selected oil blends, according to a team of American and Canadian researchers. The researchers also found that consuming certain vegetable ...

Intake of the right fatty acids can help to prevent heart attacks

June 30, 2011
There is much confusion at present about the importance of fatty acids in preventing heart attacks. Recent studies have questioned the need to reduce the intake of saturated fatty acids in the diet and to increase that of ...

High serum omega-3 polyunsaturated fatty acid content protects against brain abnormalities

October 17, 2013
According to a new study, high long-chain omega-3 polyunsaturated fatty acid content in blood may lower the risk of small brain infarcts and other brain abnormalities in the elderly. The study was published in Journal of ...

Recommended for you

In a nutshell: Walnuts activate brain region involved in appetite control

August 17, 2017
Packed with nutrients linked to better health, walnuts are also thought to discourage overeating by promoting feelings of fullness. Now, in a new brain imaging study, researchers at Beth Israel Deaconess Medical Center (BIDMC) ...

Energy dense foods may increase cancer risk regardless of obesity status

August 17, 2017
Diet is believed to play a role in cancer risk. Current research shows that an estimated 30% of cancers could be prevented through nutritional modifications. While there is a proven link between obesity and certain types ...

Technology is changing Generation smartphone, and not always for the better

August 16, 2017
It's easy to imagine some graybeard long ago weighing in on how this new generation, with all its fancy wheels, missed out on the benefits of dragging stuff from place to place.

The environmental injustice of beauty

August 16, 2017
Women of color have higher levels of beauty-product-related chemicals in their bodies compared to white women, according to a commentary published today in the American Journal of Obstetrics and Gynecology. The authors say ...

Heavily used pesticide linked to breathing problems in farmworkers' children

August 15, 2017
Elemental sulfur, the most heavily used pesticide in California, may harm the respiratory health of children living near farms that use the pesticide, according to new research led by UC Berkeley.

Taking a stand on staying mobile after 80

August 14, 2017
(HealthDay)—If you want to stay as fit as possible well into your 80s, the answer may be as simple as standing on your own two feet.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.