Healthy Articles

New Study Warns: This Toxic Oil Causes Dementia and Weight Gain

Do you think canola oil is healthy?

If so, new research suggests that you may want to think again!

Although slickly marketed as a healthy cooking oil, a new study shows that consumption of canola oil can lead to weight gain and dementia.

But first, in order to better understand the results of the study, let’s explore the origins of canola oil.

What is Canola?

Canola oil what first developed in Canada in the 1960s. In fact, the word “canola” comes from a combination of the words “Canadian” and “oil.”

Scientists from the University of Manitoba took the toxic rapeseed plant and used breeding methods to remove the dangerous components including erucic acid and glucosinolates.

The resulting crop looks just like rapeseed but is actually an entirely different plant now called canola which is a trademarked name.

How is Canola turned into Oil?

The oil is derived from the tiny seeds of the canola plant. Most canola is oil is made with large scale industrial production methods.

Dr. Guy Crosby, adjunct associate professor at the Harvard School of Public Health, explains that “most canola is chemically extracted using a solvent called hexane, and heat is often applied which can affect the stability of the oil’s molecules, turn it rancid, destroy the omega-3s in it, and can even create trans fats.”

This industrial processing of canola oil is one of the primary factors responsible for the negative health effects observed by researchers.

The New Study

Professor Domenico Praticò, director of the Alzheimer’s Center at Lewis Katz School of Medicine at Temple University (LKSOM) in Philadelphia led recent research which found many alarming effects of canola oil consumption.

Their findings suggest that canola can negatively impact learning ability and lead to memory loss.

This is likely due to the associated increased build-up of plaques in the brain which is a sign of neurodegenerative disease.


The research was done using an animal model which was designed to mimic the progression of Alzheimer’s disease in humans.

The mice were separated into two different test groups. One group was a control that received a normal diet. The other group received a normal diet with an additional equivalent of two tablespoons of canola oil per day.

The mice were evaluated after 12 months. The most obvious difference between the two groups was that the mice on the canola oil diet had accumulated much more body fat than the control group.

When subjected to maze tests, the canola oil group exhibited significant impairments in working memory.

Later, when the brain tissue of the mice was examined, the canola oil group had consistently increased formation of amyloid plaques – a sign of neurodegeneration. Additionally, the canola oil group also had decreased connectivity between neurons, a phenomenon normally associated with brain injury.

Canola is Not a Healthy Choice

These results stand in stark contrast with previous studies from the same researchers showing that olive oil can actually improve memory and reduce the development of amyloid plaque.

Refined and processed oils created through industrial manufacturing processes just cannot stand up to the time tested ancestral wisdom of whole unadulterated foods such as olive oil.

If you are looking for healthy cooking oils, favor saturated fats which are least likely to oxidize under high heat due to their higher smoke point and more stable molecular configuration.

Good cooking oil include: Coconut oil, grass-fed beef tallow, pasture-raised lard, and grass-fed ghee. For lower heat you can use macadamia nut oil, avocado oil, or olive oil.

But whatever you do, avoid canola oil at all cost!

Beware Restaurant Food

The unfortunate truth is that many restaurants use canola oil for cooking and frying. When going out to eat make sure to ask what kind of oils are used for cooking and for dressings and sauces. Canola oil is very cheap and has been marketed as healthy so many restaurants find it attractive and economical to use.

If they do use canola, ask if your food can be made with another oil such as olive oil or butter instead. Also, ask to see if their olive oil is cut with canola. This is a common practice. Other oils to avoid include: soy oil, corn oil, and vegetable oil.

It may seem inconvenient and make you feel like you are being a difficult customer but do you really want to increase your chances of developing dementia?

This is serious business.

The results of the study showed significant changes after 1 year of relatively small exposure to canola. This would be roughly equivalent to eating one meal out a restaurant every day for one year.

It’s not worth the risk. The effects of dementia can be devastating. Wouldn’t you like to be lucid and conscious well in to old age?

Then let’s avoid canola oil and take care of our health!


Instead of canola oil, use heart-healthy olive oil! 

The best olive oil available is grown in Greece. This is because Greek olive oil is high antioxidant polyphenols which scavenge free-radicals and prevent oxidation of the delicate monounsaturated fatty acids found in olive oil. You want to always look for 100% organic cold-pressed extra virgin olive oil for maximum freshness.

Get your own bottle of 100% organic high polyphenol Keto Zone Harvest Extra Virgin Olive Oil here.



1. https://www.naturalnews.com/2017-12-22-scientists-finally-issue-warning-against-canola-oil-study-reveals-it-is-detrimental-to-brain-health-contributes-to-dementia-causes-weight-gain.html

2. http://www.dailymail.co.uk/health/article-5155567/Canola-oil-worsens-memory-loss-causes-weight-gain.html

3. https://www.huffingtonpost.com/entry/what-is-canola_us_58d13dfde4b0be71dcf81b08


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  1. I was warned about Canola oil after I had a valve replaced in March. Warned not to use it because it could have an adverse effect to my heart.

  2. I’ve followed Doctor Colbert’s advise for years, he’s right on in the things he has researched and recommends for our health. I stopped all breads wheat, oats and all other grains and my weight has dropped 12 pounds in 4 months. Also no white sugar I did all my Christmas baking using coconut olive oil and nut flour no one knew but loved the treats. I thank God for the Colbert team.
    I planned to start the new year with the 21 day detox order in December but as of todate 01/22/18 I have not received VERY Disappointed

  3. What is the difference in the Keto Zone diet and other book Let Food be your Medicine?
    I need to lose weight!

  4. Several years ago I heard that soy was bad, so I switched to mayonnaise made with canola instead of soy. So now I’m wondering if soy is better than canola, or maybe there’s another kind of mayonnaise? I’ll have to look around the next time I’m at the store.

  5. Dear Dr. Colbert. Thank you for bringing us vital knowledge to change our lives for the better. I started the Keto Diet the last week of October.My starting weight was 265. I have currently lost 30 pounds. I tried so mant to lose weight and failed. I have a way to go but I know that I have already succeeded. Knowledge truly is power! I pray for you and your wife everyday. Thank you for your labor of love.

  6. Thanks for the clarification on canola oil. I heard it was bad then others would say it’s suppose to be healthy. I usually use extra virgin coconut oil but it’s getting difficult to find. Is it best to use the extra virgin coconut oil?
    Thank You!!!

  7. I just received an email stating canola oil is good for seniors and to stop using avocado and coconut oils, canola is much better for older people. I haven’t used it for years and won’t start again. Thanks for the info about restaurants. But where can you get tallow and lard?

  8. Wonderful. God Bless Dr: Colbert helping us to take care of God’s Temple, our body. My Pastor introduced this fabulous healthy lifestyle to his congregation. With The Holy Spirit’s help, I’m merging into this divine lifestyle.
    Thank You and Bless you Dr: Colbert.
    Phyllis/ Toronto/ Canada


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