That's true, especially if you buy the more available nuts in most countries, such as peanuts...but hey, they're less likely to be rancid (and they're healthier!) than most foods that have lots of fat, especially oil and fatty meats. Avocados are probably a bit better to have as a source of fat, but they're not always easy to source :)
RE: Which (Tree) Nut Protects Best From Cancer?