Gordon Ramsay, head chef on the shows "Cookalong Live," "Hell's Kitchen" and "Kitchen Nightmares," demonstrates to television critics how to make a Baked Alaska dessert at the FOX Television Critics Association summer press tour in Pasadena, Calif., Thursday, Aug. 6, 2009. (AP Photo/Chris Pizzello)

In the restaurant business, it’s all about making dough.

After 10 years, "Kitchen Nightmares" is finally coming to an end, but for many restaurants that appeared on the show, the real nightmare continues.

According to Grub Street New York, more than 60 percent of the restaurants featured on the U.S. version of "Kitchen Nightmares" are now closed. Even more shockingly, almost 30 percent closed within one year of their episode airing (some even before).

Chef Gordon Ramsay credits "Kitchen Nightmares" as the show that "propelled" his TV career, but unfortunately the data suggests it may have ended a few careers, too.

The good news for Ramsay is that around 40 percent of the restaurants from the show still remain open.