Seed oils are vegetable oils extracted from seeds and are found throughout the modern food supply. Common examples include soybean, sunflower, safflower, corn, canola, cottonseed, grapeseed and rice bran oils. They are widely used in packaged foods, baked goods, salad dressings, sauces, fried foods and fast food because they are inexpensive, versatile and generally have a neutral flavour.
But seed oils can make you very ill because
they are toxic. Seed oils contain polyunsaturated fats, particularly linoleic
acid which can cause inflammation and oxidation.
Which seed oils should you avoid?
The short answer is all of them. Better to not
buy them and not cook with them. Also to stop eating ultra processed foods that
are known to contain them. Start reading labels and let go of the deep-fried
foods, those high in kilojoules and carbohydrates, salt and sugar. Your take
away food is most likely cooked in repeated oils that in itself will promote
oxidation and the formation of toxic products.
How do seed oils affect your body?
Linoleic acid is a precursor for oxidative
stress. Polyunsaturated fats contain chemically vulnerable double bonds, which undergo
oxidation under certain conditions. Oxidized lipids can produce reactive
compounds that interact with cells and tissues. So, when you consume linoleic
acid in this denatured world it can add to your inflammation or mitochondrial
damage which probably already exists in your body. Saturated fats on the other
hand are metabolised differently and therefore in many cases make the healthier
choice.
One of the biggest concerns with seed oils is their high concentration of linoleic acid, an Omega-6 polyunsaturated fatty acid. Linoleic acid can become incorporated into cell membranes throughout the body, including the membranes surrounding mitochondria.
Linoleic acid has a very long half-life in the body, meaning that replacing it with other fatty acids can take considerable time. This is one reason why reducing ongoing exposure to seed oils is important.
Seed oils are also extensively processed. Industrial production can involve high temperatures, chemical extraction, bleaching, and deodorisation. Processing and subsequent storage or heating can contribute to oxidation and the formation of undesirable lipid compounds.
Another concern is that polyunsaturated fats are particularly vulnerable to oxidation when exposed to heat, light, and oxygen. Oxidized fats can generate lipid peroxides and free radicals, which may contribute to oxidative stress and cellular damage. Repeatedly heating cooking oils can further increase oxidation.
Seed oils are also heavily concentrated in omega-6 fatty acids. A diet dominated by seed oils and ultra-processed foods can contribute to an excessive intake of Omega-6 fats while providing insufficient Omega-3 fats. Maintaining a healthy balance between these fatty acids is important for regulating inflammatory processes in the body which is why you should never take an Omega 3 supplement on its own but in a combination of 3,6 and 9.
Seed oils and mitochondrial health
Mitochondria are often called the powerhouses of our cells because they produce ATP, the energy required for cellular function. The inner mitochondrial membrane contains a phospholipid called cardiolipin. If cardiolipin has an abundance of linoleic acid then oxidative stress can increase and the mitochondria become highly oxidised and disrupt cellular energy production. This can affect autophagy, protein transport, mitochondrial dynamics, and mitophagy which is the removal and recycling of damaged mitochondria.
When mitochondrial function is compromised, cellular energy production can suffer. This may contribute to problems such as fatigue, brain fog, poor metabolic function, sleep disturbances, and increased oxidative stress. Seed oils can also force your body into sugar-burning mode, damage mitochondria and speed up aging.
How to detox seed oils from your body
There is no easy solution for removing seed
oils from your body because fatty acids can become incorporated into cell
membranes meaning replacing them requires time. The goal is to stop adding more
problematic fats while supporting healthy cellular and metabolic function.
1. Eat a natural food diet
The first step is to eliminate seed oils from your diet. Avoid processed foods containing soybean, corn, sunflower, safflower, cottonseed, grapeseed, canola, and rice bran oils. This means eliminating chips, crackers, fried foods, frozen meals, cookies, muffins, cakes, margarine, packaged sauces, processed snacks, microwave popcorn, instant noodles, fast food, and other over processed foods.
Instead, focus on nutrient rich whole foods. Choose quality animal products such as grass-fed or pasture raised animal products, wild caught seafood, eggs, Greek yogurt, vegetables, herbs, spices, low-glycaemic fruits, avocados, olives, extra-virgin olive oil, coconut oil, butter, and ghee. Also drink filtered water free from contaminants.
Be sure to eliminate canola, soybean, peanut, corn. Safflower, grapeseed, margarine, cottonseed oil and hydrogenated oils. Replace these with good old butter, tallow, ghee, coconut milk or oil, avocado oil, olive or fish oil and eggs. Those are all natural fats that your body uses more easily.
2. Intermittent fasting
Intermittent fasting can support autophagy,
the body's natural cellular recycling process. Autophagy helps the body
identify and recycle damaged cellular components.
Begin by gradually increasing the overnight fasting period from dinner to breakfast. If your last meal is 8pm then to achieve metabolic health and cellular repair start with a 12-hour overnight fast and have breakfast after 8am. Then you can gradually increase the fasting window as appropriate to a 16 hour fast. Remember to check with your doctor or naturopath before you start especially if there are already health concerns such as diabetes etc. Fasting may be inappropriate for some people with some conditions.
3. Exercise
Regular movement is another important
component of supporting metabolic health and cellular renewal. Walking,
resistance training, cardiovascular exercise, stretching, and other forms of
physical activity can support circulation, mitochondrial function, and
autophagy.
Combining strength training with
cardiovascular exercise provides a comprehensive approach to maintaining
metabolic and cellular health.
4. Sleep
Sleep is essential for tissue repair, cellular renewal, metabolic regulation, and overall recovery. Aim for approximately seven hours each night. Support your circadian rhythm by getting natural light during the day and reducing bright artificial light and close down all screens 2 hours before you sleep. Create a calm nighttime environment and maintain a consistent sleep schedule.
5. Saunas
Heat therapy and sauna use can stimulate
heat-shock proteins and cellular stress-response pathways. These processes can
support cellular maintenance and autophagy. Saunas also facilitate detoxification,
improve blood glucose levels, increase growth hormone, reduce inflammation and
improve circulation. Infrared saunas are amazing and if you haven’t tried it yet,
please do. It would be good to make it part of your regular wellness routine.
Remember again to check with your doctor or naturopath if this is safe for you
depending on other health issues you may have.
6. Cold exposure
Have you ever had a warm shower and then just
turned on the cold for a second? Instantly your energy field will respond and
your body also. Cold showers and cold plunges can stimulate responses that can influence
mitochondrial activity and cellular recycling. Start with brief periods of cool
and gradually increase the duration.
The most effective strategy though is to stop consuming seed oils regularly and replace ultra-processed foods with nutritious whole food alternatives. Include all of the above in your wellness routine and within months you will begin to see some results. Remember your body needs time to detox from any artificial poisons so give it a bit of time.
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