You'll get a chance to eat rich-tasting foods like roasted sweet potatoes, hummus, and even this Lima Bean Spread. You digest them slowly so that you feel full longer. Hunger's not a problem when you can munch on nuts, olives, or bites of low-fat cheese when a craving strikes. Feta and halloumi are lower in fat than cheddar but still rich and tasty.
Available research on the ketogenic diet for weight loss is still limited. Most of the studies so far have had a small number of participants, were short-term (12 weeks or less), and did not include control groups. A ketogenic diet has been shown to provide short-term benefits in some people including weight loss and improvements in total cholesterol, blood sugar, and blood pressure. However, these effects after one year when compared with the effects of conventional weight loss diets are not significantly different. 
SOURCES: Environmental Nutrition, June 2003; May 2004; February 2005. The Journal of Pediatrics, July 1995. Journal of the American Dietetic Association, February 1997. Journal of the American Dietetic Association, July 1997. Journal of the American Medical Association, 2004; 292. Food Chemistry, May 2004, vol 85; issue 3. American Journal of Clinical Nutrition January 2005. FDA News, Nov. 1, 2004. The Olive Oil Source web site.