By OBBM Network Editorial Staff

Derived from an episode of Consumer Exposed.

What if the bottle you’ve trusted for generations is actually a silent source of inflammation? The familiar blue Crisco can, the unassuming Wesson vegetable oil, and three other household names have been quietly transformed, swapping once‑banned trans fats for refined blends that may do more harm than good.

From Trans Fats to Omega‑6: The Crisco Switch

Crisco, the iconic blue‑canned shortening that has been a pantry staple since 1911, originally contained partially hydrogenated vegetable oils—a source of artificial trans fats linked to higher LDL cholesterol and systemic inflammation. The FDA banned these trans fats in 2018, prompting Crisco to reformulate without fanfare. The new formula blends refined soybean oil and palm oil, both high in omega‑6 fatty acids. As the program explains, “The ratio of omega‑6 to omega‑3 in your diet is one of the most significant drivers of inflammatory response in the body.” The change was not reflected on the label, leaving families unaware that the product they bought for decades now delivers a different health risk.

Refined palm oil undergoes high‑temperature processing that strips natural nutrients and can generate compounds flagged by independent researchers for cardiovascular concerns. The result is a product that, while free of trans fats, introduces a new inflammatory challenge.

Wesson’s Quiet Chemistry: Hexane Extraction and High Omega‑6

Wesson vegetable oil, a brand that has quietly sold refined soybean oil for over a hundred years, relies on a process that begins with hexane extraction—a petroleum‑derived solvent. The transcript notes that “Trace amounts of hexane can remain in the finished product,” and the FDA does not require testing for these residues. After extraction, the oil undergoes degumming, refining, bleaching, and deodorization, a multi‑stage industrial procedure that creates oxidation byproducts such as aldehydes, which independent studies have linked to cellular damage.

The omega‑6 to omega‑3 ratio in Wesson sits at roughly 7 : 1, well above the 4 : 1 ratio many researchers consider optimal for reducing inflammation. Because the oil is used daily—sautéing, frying, baking—the cumulative omega‑6 load can become significant over a year.

Mazzola’s Heart‑Healthy Claim vs. Reality

Mazzola markets its corn oil as “cholesterol‑free” and “better for your heart.” While technically accurate—plant oils contain no cholesterol—the claim overlooks the oil’s extreme omega‑6 dominance. The refined corn oil in Mazzola has an omega‑6 to omega‑3 ratio of about 46 : 1, a level that can fuel systemic low‑grade inflammation, a key driver of chronic diseases such as heart disease and type 2 diabetes.

The brand cites a 2015 study showing lower LDL cholesterol compared to coconut oil, but the study was funded by ACH Food Companies, the manufacturer of Mazzola. Independent research points instead to oxidative stress and elevated inflammatory markers from refined corn oil. Moreover, Mazzola’s smoke point is low enough that typical home cooking often exceeds it, accelerating the formation of harmful aldehydes.

Parquet’s Ever‑Changing Labels and Additives

Parquet has reinvented itself repeatedly—margarine, cooking spray, squeeze‑bottle oil—yet each version rests on a base of refined vegetable oils extracted with hexane and processed at high heat. The current formulations combine soybean and canola oils, both high in omega‑6. The cooking spray adds dimethylsilicone, propellant gases, and artificial flavors, creating a mixture of chemicals that, when heated, interact in ways not disclosed to consumers.

While Parquet’s marketing has shifted to match prevailing nutritional trends, the underlying product has remained an industrially refined oil blend, offering little of the “natural” promise implied by its packaging.

The Two Oils That Hold Up

After evaluating the five brands, only two emerged as meeting their health claims without hidden trade‑offs. These oils retain a more balanced omega‑6 to omega‑3 ratio and avoid the extensive chemical processing seen in the others. The investigation highlights the importance of scrutinizing ingredient lists, processing methods, and independent research rather than relying on legacy branding.

Consumers seeking healthier cooking options should look for oils that are cold‑pressed, minimally refined, and clearly label their source and processing method. Choosing such products can help reduce the inflammatory load that many of today’s refined oils contribute to the average American diet.

By exposing the hidden chemistry of everyday cooking oils, the report underscores a broader lesson: generational trust in familiar brands does not guarantee safety. In a market where labels can be silent about critical changes, informed shoppers are the best defense against unseen health risks.

The full episode of Consumer Exposed is available on OBBM Network TV.