An interesting animal (NB. not humans) study is out this month showing that eating certain types of fat may disrupt healthy or ideal appetite control/regulation.  The brain may not regulate your hunger like it should.   Expect more work in this area, and in the meantime, don’t stop eating fat.  Just keep an eye on portions and try to choose the healthier fats.

View a synopsis here: http://www.sciencedaily.com/releases/2009/09/090914110533.htm.