To Gans, the regimen is nothing more than a crash diet—and an expensive one at that. A more sensible route to weight loss, she says, is no more mysterious than choosing healthy foods, limiting portion sizes, and exercising. "This is another approach for people who believe there's a silver bullet, but there is no such thing. All this diet does is show you how to restrict, and a person can only do that for so long without returning to old habits."
[See: Unusual Uses for Avocados.]
Angela Haupt is a health reporter for U.S. News & World Report. You can follow her on Twitter or reach her at firstname.lastname@example.org.