polyunsaturated vegetable oils!
Especially when eaten with vast amounts of carbohydrates.
They might be good as fuel for cars but they are not good fuel for human bodies.
I find it amazing that 75% of my calories intake comes from saturated fats and yet my cholesterol is well below the acceptable level.
The only fats I eat are: Cheese, butter, full fat double cream, coconut oil, extra virgin olive oil and avacado oil.
Eating lots of fat does not mean high cholesterol.
Its about eating quality fat that the body can digest and use.
My ex-partner was a personal trainer and she told me years ago that when you eat good fats the body takes what it needs and then passes the excess out.
If you eat margarine or polyunsaturated vegetable oils for instance, the body does not know how to deal with this man made fat so the body stores this fat because it does not know how to get rid of it.
Mike discusses at greater length in other videos.