What are "good fats"?

Unsaturated: The weight of opinion is that a diet high in saturated fat increases LDL cholesterol / vascular risk (heart attack, stroke). Epidemiologic studies especially based on what people say they've eaten and without controlling for other factors generate unreliable results; this is "best current thinking." trans-fats are generally no longer available over concerns about risk despite no real animal model.

Plant/fish: Good fats are fish and plants (olive oil, avocado, nuts for example). You can find much more info here http://www.Webmd.Com/diet/features/skinny-fat-good-fats-bad-fats?Page=2.