Oils labeled as "partially hydrogenated." Most partially hydrogenated oils are made from vegetable oils like soybean or cottonseed, according to the Center for Science in the Public Interest. Partially hydrogenated oils are trans fats — fats that the FDA claims have been shown to increase your risk for heart disease. Recently, the FDA ruled that manufacturers must remove all trans fats from their products by 2018. You should remove partially hydrogenated oils from your diet, too, Warren says.
Even though the rapeseeds that canola oil is made from contain omega-3s fatty acids, these fatty acids are fragile and subject to oxidation through heating. If you think about it, other oils that are high in omega-3s would never be used for cooking. Fish oil and flaxseed oil are high in omega-3s, but are never heated because they are sensitive to oxidation. If you look at a label of a flax seed oil bottle it will say not to heat it.
We went back and forth like that for several rounds, yelling at each other in 30-degree weather in front of an RV wrapped in marijuana-leaf graphics and blasting Bob Marley music. Finally, he stopped trying to enlighten me and shuffled off to let me buy my lollies in peace. As I tore into my new treats, I realized the whole thing had been a scene from the internet’s dominant cannabidiol discourse come to life: Some money had been spent and some opinions had been said, but no one had gained any information.