In the current issue of the Journal, Kappagoda et al. (11) discuss the LCarb-HP diet and challenge its role in clinical cardiology. They report the wide media coverage that articles on the LCarb-HP diet received during the last AHA meeting and emphasize theoretical, but as yet unproven, dangers that LCarb-HP diets may pose. They tend to dismiss recent, somewhat promising LCarb-HP diet research. For example, they give short shrift to a study presented by Westman, Yancey, and Guyton at the 2002 AHA scientific sessions, which found that LCarb-HP diets reduced weight, SC, LDL, very-low-density lipoprotein, and percent of small LDL particles, suggesting possible usefulness in treating the metabolic syndrome (12). Kappagoda et al. (11) also minimize the findings of other recent studies of 6- to 12-month duration (13- 15) that show no ill effects of LCarb-HP diets but rather a tendency toward greater weight loss, improved lipid patterns, and increased insulin sensitivity when compared with LF-HCarb diets. Kappagoda et al. (11) conclude that a LCarb-HP diet cannot be recommended, because of potential nutritional deficiencies and the absence of long-term data on efficacy and safety and because they “run counter to all current evidence-based dietary recommendations.” They refer to the LF-HCarb diet as having an established record of “safety and efficacy,” a position difficult to sustain without ignoring evidence supporting its culpability in the current epidemic of obesity, type II diabetes, and the metabolic syndrome.