This article is from the Fat-free Diet FAQ, by firstname.lastname@example.org (Michelle Dick) with numerous contributions by others.
There is no ideal level of dietary fat that applies to everyone.
Current US recommendations are to eat no more than 30%CFF. Some
health professionals recommend 25, 20, 15, or 10%CFF or less.
Nathan Pritikin, Dr. Dean Ornish, and Dr. John McDougall are three
proponents of diets with less than 10%CFF. The primary focus of
this group (as stipulated in the creation message) is vlf diets in
the 10%CFF range. While diets this low in fat are not optimal for
everyone, this newsgroup is geared to those who have determined
that such diets are optimal for themselves.