Avoid Vegetable Oils

Avoid Vegetable Oils on the Endometriosis Diet

Women diagnosed with endometriosis, who wish to follow the endometriosis diet, must be mindful of the oils they incorporate in their diet. Consumption of vegetable oils can further inflame endometriosis. Vegetable oils contain a very high concentration of Omega 6 fatty acids and polyunsaturated fats for optimal health the body must maintain a delicate balance between omega 6 and omega 3, too much Omega-6 fats cause inflammation and increase cancer risk.  Regularly consumption of vegetable oil whether in produced foods, part of your cooking process or as a component of a salad dressing, interferes with the body’s balance of essential fatty acids such as omega 3. Consumption of vegetable oils does not form part of the endometriosis diet because, when the balance of omega 3 is disrupted, the body fails to produce the important anti-inflammatory hormones, prostaglandins, PGE 1 and PGE 3, that endometriosis sufferers desperately require to manage immunity, pain and the growth of endometriosis.


 Mounting evidence suggests that natural interventions such as omega-3 fatty acids may play a role in the management of endometriosis, and there for should form part of the endometriosis diet . The pain associated with endometriosis is likely due to increased levels of inflammation (Sekhon 2013; Bulun 2009). Omega-3 fatty acids have generated interest because of their anti-inflammatory abilities (Zhang 2012). These anti-inflammatory capabilities are likely one mechanism by which omega-3 fatty acids help prevent the development of endometriosis (Missmer 2010). Animal studies have helped validate the importance of omega-3 fatty acids for treating endometriosis. One study using an animal model of endometriosis found that supplementation with eicosapentaenoic acid (EPA), an important omega-3 fatty acid found in fish, reduced inflammation of the endometrium and also reduced levels of other molecules associated with endometriosis (eg, prostaglandin E synthase, an enzyme related to the chronic inflammation in endometriosis) (Netsu 2008). Another study examined the effects of fish oil supplementation on an animal model of endometriosis and found that fish oil was able to reduce the incidence of endometriosis-associated adhesions (Herington 2013). A large study found that women who ate greater amounts of long-chain omega-3 fatty acids were also less likely to develop endometriosis (Hansen 2013).


 To maintain the balance of essential fatty acids – omega 3’s as defined by the endometriosis diet, it is vital endometriosis suffers avoid all vegetable oils and associated foods produced with vegetable oils. The name vegetable oil itself is misleading you could incorrectly assume vegetable oil is made from vegetables and is therefore healthy. Vegetable oil is the product of processed seed oils the following is a list of oils that fall under the umbrella of vegetable oils, these are the oils endometriosis suffers should avoid.



Vegetable Oils to Avoid

Canola OilGrapeseed OilCottonseed OilSafflower OilSunflower Oil
Peanut OilCorn OilSoybean OilVegetable Oil


The process of extracting vegetable oil from seeds completely changes the molecular structure of the oil. Unlike butter or coconut oil, these vegetable oils can’t be extracted by pressing or separating naturally. They must be chemically removed, deodorized, and altered. These are some of the most chemically altered foods in our diets, yet they have been promoted as healthy.


It might be easy to avoid the list of oils above, it’s a lot harder to avoid the foods that incorporate vegetable oil in their ingredients or production process. Check out practically any processed food, and you will find at least one of these ingredients, often labeled as “partially hydrogenated corn/soybean/etc. oil” or “May contain soybean or canola oil.” These foods in particular often contain one of the above unhealthy oils:


Foods Containing Vegetable Oil

Store Bought CondimentChipsArtificial CheesesStore bought nuts and snacks
SaucesCrackersSnack FoodsBiscuits
Practically anything sold in the middle aisles of the storeMargarineShorteningAny fake butter – imitation butters
Salad DressingsMayonnaise


Process of vegetable oil extraction

To fully understand and appreciate the destructive nature of vegetable oil on the balance of omega 3 fatty acids for endometriosis sufferers it is important to understand how vegetable oil is actually produced be sure to read the production process below.


Oil seeds such as soybean, rapeseed, cotton, sunflower are gathered. The seeds are husked and cleaned of dirt and dust, then crushed. To start the oil extraction process, the crushed seeds are then heated to temperatures between 110 degrees and 180 degrees in a steam bath. The seeds are put through a high volume press that uses high heat and friction to press the oil from the seed pulp. The seed pulp and oil are then put through a hexane solvent bath and steamed again to squeeze out more oil. Hexane is produced by the refining of crude petroleum oil. It is a mild anesthetic.


The seed/oil mixture is put through a centrifuge, where phosphate is added to begin the separation of the oil and seed residues. After solvent extraction, the crude oil is separated and the solvent is evaporated and recovered. The seed pulp residues are conditioned and reprocessed to make by-products such as animal feed. The crude vegetable oil is then put through further refining techniques including degumming, neutralization and bleaching:


Deodorization is the final step in the refining of vegetable oils. Pressurize steam at extremely high temps (500 degrees or more) is used to remove volatile compounds which would cause off odors and tastes in the final product.


The oil produced is referred to as “refined oil” and is ready to be consumed or for the manufacture of other products. A light solution of citric acid is often added during this step to inactivate any metals such as iron or copper present in the final product.  Since vegetable oils are chemically produced, its not really surprising that they contain harmful chemicals. Most vegetable oils and their products contain BHA and BHT (Butylated Hydroxyanisole and Butylated Hydroxytoluene) which are artificial antioxidants that help prevent food from oxidizing or spoiling too quickly. These chemicals have been shown to produce potential cancer causing compounds in the body, and have also been linked to liver/kidney damage, immune problems, infertility or sterility, high cholesterol, and behavioral problems in children.