Also take into account saturated and unsaturated fats.

Unfortunately, while I know the difference and even the chemical reason why one is healthier than the other, I have never been able to get the name right for which is which. So fuck all if I could tell you which is the better one. Google can probably tell you. Or someone else here. It's pretty common knowledge, I think. But it's worth knowing that it's not just some old wives' tale.