http://www.dcnutrition.com/fattyacids/ The link above explains how an overindulgence of so-called healthy fat like (corn oil, canola, sunflower...) may actually be harmful.I have read this type of research repeatedly and i am very convinced of it.i think that when the ratio of omega 6 to omega 3 becomes too heavily stacked in favor of omeg 6's --then, trouble can start. Our ancestors had a ratio that was 3 to 1. Today it is closer to 25 to 1. That spells trouble.Do I think that this is the cause of IBS? No. However, i think that many factors can contribute to the onset of IBS and why would anyone want to stack the deck against themselves through nutritional negligence?The immune and nervous system are heavily dependant upon "good fats" like omega 3 fatty acids. However, once I became ill the inclusion of healthy fats gave minimal results.Today, I have banished all seed oils. I use olive oil, coconut oil (high in easily absorbed MCT's and potent antifungal fats like lauric acid found in high concentration in breast milk), also flax seed (omega 3's), cod oil, and fish body oils.For 20 years I was a strict consumer of seed oils. I thought they were healthy. Now i know that they are subject to high degrees of oxidation. Omega 3's like flax oil are the same way. I am also a big believer in the use of vit E and C to help retard the oxidation of these oils once consumed.quote: Linoleic acid (omega 6 fatty acid) serves as the parent of a large polyunsaturated fatty acid, called ARACHIDONIC ACID. Arachidonic acid in turn forms PROSTAGLANDINS (PGE2) and thromboxanes (TXA,), hormone-like lipids that tend to promote blood clotting, induce pain and inflammation and cause smooth muscle contraction . Another pathway converts arachidonic acid to LEUKOTRIENES, one of the most powerful inflammatory agents.