According to The NPD Group (Port Washington, N.Y.), the percentage of Americans following low-carb diets like Atkins and South Beach dropped to 4.6% in September. This is from the 9% mark reported in January. Furthermore, sales of those diet-related books have tapered off, as well, with only about 20,000 copies selling per week, down from the 70,000-a-week tally at the peak of the craze.
In addition, ACNielsen (New York) reports slower sales of products targeting the carb-cutting consumer. Dollar sales of the items rose 6.1% during the 13 weeks ending September 25, a drop from the double- and triple-digit gains in prior periods.