This article is referring to vegetable oils like, sunflower oil, corn oil, canola oil, cottonseed oil, safflower oil and soybean oil
Grapeseed, hempseed, sesame, and avocado oils aren’t vegetable oils and are good oils to use.
1. Vegetable Oils Are Loaded With Dangerous Trans Fats
Trans fats are unsaturated fats that are modified to be solid at room temperature. These fats are highly toxic and are associated with an increased risk of various diseases, like heart disease, stroke, diabetes, obesity and cancer.
Trans fats are so dangerous that The FDA has declared them unfit for human consumption and has given food manufacturers until June of 2018 to take them out of processed and fast foods.