Cottonseed oil

Cottonseed oil is a vegetable oil extracted from the seeds of the cotton plant after the cotton lint has been removed. It must be refined to remove gossypol, a naturally occurring toxin that protects the cotton plant from insect damage. Therefore, unrefined cottonseed oil is sometimes used as a pesticide. Cottonseed oil in its natural unhydrogenated state has no cholesterol and does not contain trans fatty acids. However, it does contain over 50% Omega-6 fatty acids and only trace amounts of Omega-3 fatty acids, and the imbalance is considered unhealthy if not used in moderation or balanced elsewhere in the diet. Further, these polyunsaturated fats can potentially go rancid during the extraction process.

Cottonseed oil is commonly used in manufacturing potato chips and other snack foods. Along with soybean oil, it is very often partially or fully hydrogenated. The growing consensus is that in hydrogenated ( trans fat) form these oils are very unhealthy. Cottonseed oil was the first oil to be hydrogenated in mass production, originally intended for candle production, and soon also as a food. In part because regulations apply differently to non-food crops, it has also been suggested that cottonseed oil may be highly contaminated with pesticide residues, but insufficient testing has been done [1].

Cotton (oil) is also one of the big four (soy, corn, rapeseed/Canola, and cotton) genetically modified crops grown around the world.