On composition: It is factually correct that sunflower, soybean and rapeseed oils contain omega-6 linoleic acid. Sunflower and soybean oils are high in it; rapeseed oil contains less omega-6 and notably more alpha-linolenic acid (omega-3), which is why the DGE explicitly recommends rapeseed oil and advises using sunflower, corn germ and safflower oil less often. So the "contains omega-6" part of the claim is trivially true, and there is a genuine, officially endorsed reason to prefer rapeseed over sunflower oil. That reason is about optimising fatty acid balance, not about toxicity.

On inflammation: A systematic review of randomised controlled trials in healthy non-infant humans concluded that essentially no RCT evidence shows that adding linoleic acid to the diet raises concentrations of inflammatory markers. Later syntheses reached the same conclusion. Biomarker studies point in the opposite direction of the viral claim: higher blood linoleic acid has been associated with lower hs-CRP and lower glycoprotein acetyls, and pooled cohort analyses have linked higher circulating linoleic acid to lower cardiovascular risk and lower all-cause mortality. The proposed mechanism (LA converting to arachidonic acid and then to pro-inflammatory eicosanoids) exists biochemically, but only a very small fraction of dietary LA is converted, and increasing LA intake does not reliably raise tissue arachidonic acid in humans.

On cardiovascular outcomes: The Cochrane review is the most cautious source. It found no conclusive evidence of benefit or harm from increasing omega-6 intake for most cardiovascular outcomes, with weak evidence of a possible reduction in myocardial infarction. Cochrane's position is "not proven either way," not "harmful."

On obesity: No high-quality human evidence was found showing that sunflower or rapeseed oil causes weight gain independent of total energy intake. A randomised trial directly comparing sunflower and rapeseed oil in adults with overweight and obesity found no differential impact on the cardiometabolic biomarkers studied. Sources arguing that vegetable oil "makes us fat" that surfaced in search were commercial materials from a company selling an alternative cooking oil, which is a low-tier source with a direct financial interest.

On "highly processed" and "poison": Refined oils are indeed industrially processed, and hexane is commonly used as an extraction solvent for seed oils. Regulators historically concluded that residual hexane after refining did not pose a consumer health risk, and EFSA is currently conducting a full re-assessment using modern methods, having so far reported no immediate health concern. This is an open regulatory review, not a finding of harm, and it does not support the word "poison."

On climate warming: The post includes this deliberately as absurdity. No credible source attributes global warming to seed oil consumption. Agricultural oil crops do have land use and emissions footprints, but that is a different proposition from the one stated.