High-fat vs. Horrible-fat

Tom Naughton just skewered some "high-fat" studies done on mice and rats and came up with this very useful phrase:

A “Western” diet for rodents based on AIN-93G, providing 30% of fat from lard, 30% from butterfat, 30% from Crisco (hydrogenated vegetable oil), and for EFA, 7% from soybean oil and 3% from corn oil.  Approximate energy from fat 40%, carbohydrate 44%, protein 16%.

That’s not a high-fat diet by my standards — I probably get 60% of my calories from fat– but it’s certainly a high horrible-fat diet.  Of the fat calories, 40% come from hydrogenated oil, corn oil, and soybean oil.  In other words, oils that wouldn’t exist without the wonders of industrial extraction.

 (bolding is mine)

Emphasizing quality over quantity is one of the basic tenets of "the Paleo template" (another useful phrase, coined by Chris Kresser).

I've been thinking similar things about carbs (it's not high-carb diets that are harmful, it's the kind of carbs that matter) but Naughton's phrasing is exactly right.