I noticed that almost all types of cooking oil (vegetable oil, olive oil, peanut oil, etc) contain some saturated fat. Since saturated fat is known to be a contributor to heart disease, then could you simply remove the saturated fats from the oil to make it healthier?
Saturated fat is good for you. Trans fats are the bad ones, those are unsaturated fats OR saturated fats that just become radicals. The cholesterol you get from eating is nearly nothing compared to the cholesterol your body makes out of sugar you overconsume.
My cholesterol has gone down to normal since I switched to an oil-less sugar-reduced diet. I use butter for veggies and lard for meats. Also, I only use whole-fat variants of diary.