Corn Oil
Corn oil is an industrial seed oil extracted from the germ of the corn plant (Zea mays). In the consumer marketplace, it is positioned as a "heart-healthy" and versatile cooking oil with a high smoke point (450°F), making it ideal for deep-frying and high-heat sautéing. Marketing often leverages its plant-based origin and lack of cholesterol to present it as a superior alternative to animal fats, despite the heavy chemical refining required to make it edible.
Corn oil’s biological impact is primarily seen in the cell membrane and inflammatory pathways. When consumed in large quantities, linoleic acid replaces more stable fats in the cell lipid bilayer, making the cells more susceptible to oxidative stress. Furthermore, it acts as a precursor to pro-inflammatory eicosanoids. High consumption is linked to increased markers of systemic inflammation, such as C-reactive protein (CRP), and may contribute to the oxidation of LDL cholesterol, which is a key step in the development of atherosclerosis.