by Devin Dwyer

It seems some of us may need a stimulus to return to healthy eating.

Fast-food giant McDonald's said yesterday its U.S. same-store sales increased 6.8 percent in February, excluding the calendar shift from last year's leap year. Worldwide same-store sales grew 5.4 percent by the same measure. McDonald's chalks the U.S. growth up to "the strength of the chicken line-up, the core menu, particularly the Quarter Pounder, as well as beverages and our market-leading breakfast."

Has your appetite for the fast stuff changed with the economic downturn?