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.
It is generally recognized that high saturated fat consumption contributes to increases in LDL cholesterol. Trans fats are worse of course, but saturated fats in foods like hamburgers or ice cream are still a problem.
Interesting article on this: https://www.healthline.com/nutrition/5-studies-on-saturated-fat
The 7 Countries Study, upon which the hypothesis that saturated fat causes heart disease was based, has been proven to be highly flawed and misleading. Ancel Keys intentionally left out the data from many countries that contradicted his claims. During the last 20 years many studies have come out showing there’s no correlation between saturated fat and heart disease, and pretty weak association between high LDL and heart disease. Obesity, insulin resistance and systemic inflamation are much higher predictors. And there’s a lot of information to suggest seed oils - canola and soy bean oils especially - are quite harmful.
Take a look at some of the studies saying saturated fat doesn’t cause heart disease. They are usually comparing the high saturated fat group to a group eating low saturated fat. Then you have to ask, what are they replacing that saturated fat with?
Often times, the subjects in these studies end up replacing saturated fat with equally unhealthy foods, especially salt and sugar. It’s no surprise then that they didn’t find any correlation to heart disease.
You will also notice that when the researchers specifically replace saturated fat with healthier foods like complex carbs or unsaturated fats, that the correlation suddenly appears.