I'm convinced that man's body is not designed to digest food that's prepared in oil at least not in his entire life. Fat is already in the meat even in fishes. Cooking oil or some use butter sometimes is just an effort to make cooking easier and manageable without getting the food sticky.
It would be a lot better to cook without cooking oil altogether. Some special frying pans are designed to cook without having to use any cooking oil at all.
It's stupid to cook with cooking oil and then to consume the cooking oil as part of the meal. The fat and oil get saturated soon enough.
Edit: In case of older people their metabolism became slow enough so that cholesterol would build up despite a relatively good diet.
The only way to delay this or avoid it altogether is to slow down the metabolism slow down by embracing an active lifestyle. Get out and get sweaty. Cardio, plus some lifting if you like, swimming, tennis, etc will not only make you look good but helps the metabolism. After all we only have one life and one body might as well make it to look as good as we could. At least until we are given a new one post death and from the sneak peak it would be Godly lol I wonder what women would like if the man was like Godly. . .too bad no one marries anyone there lol