Burial Customs in Ancient Egypt Everyone burns fat differently. The search for the perfect diet has never been more frenzied.

Everyone burns fat differently. So how do you know which method will work for you? Our special report on finding a diet that’s just your size.
   The search for the perfect diet has never been more frenzied. Eat low-carb! No, eat low-fat! But beyond the hype, and the billions spent on weight-loss products, a revolutionary idea is catching on with researchers: the notion that no two individuals lose weight the same way. Each person has a hidden key to weight loss.
   Some people find this key on their own. Steven Wallach, for example, spent most of his 40s gaining weight after an injury sidelined him from exercise. At 47, he was. literally, fed up—with pasta, potatoes and bagels—and more than 30 pounds overweight. "I didn’t look or feel as good as I wanted to," admits Wallach. a jeweler in the New York City suburbs. He buckled down to a strict Atlkins diet plan, cut out his beloved starches and within five months dropped 30 pounds. Another five came off when he took up running. A year later, his weight has stabilized and he considers himself a lifelong convert. "I could eat this way forever," he says cheerily as he digs into his scrambled eggs.
   For Katie White, 27, a San Francisco bookkeeper, the weight-loss process was entirely different. She didn’t want to eliminate whole food groups, so decided instead to reduce her portion sizes. She swapped fast food for simple home-cooked meals that she’d learned from her mother and grandmother while growing up in Brooklyn. White snacked on fresh fruit and was "religious" about her daily regimen of sit-ups. She dropped 20 pounds her way—a way she could live with and not feel deprived. It’s possible that neither Wallach nor White would have succeeded on the other’s diet plan. They are living proof of what diet experts are coming to believe: One diet does not fit all. Each of us has markedly different indicators that influence how quickly we gain weight, and how hard it will be to lose it. In addition to the basics, such as height and age, scientists now realize our gender, genetics, metabolism, muscle mass, ethnicity, willingness to exercise, lifestyle, attitude and even where we live all come into play. This idea runs counter to what most diet-book authors or pricey weight-loss centers preach: that their plan is the key to the kingdom of the slim. A custom-fit diet not only makes sense, it’s also good news for the dieter who couldn’t lose weight on this year’s fad, or who took off pounds quickly and then gained them back (and more).
   That message couldn’t come at a more opportune time, as Americans continue their climb toward universal pudginess. Since the ’70s, obesity rates have doubled and fully two-thirds of the country is overweight. Even more alarming: The number of fat kids has tripled in the past 30 years. The problem reaches beyond vanity, since diabetes, heart disease, high blood pressure and some forms of cancer are associated with obesity.
    The individualized approach to dieting has powerful proof at the Weight Loss Registry, a roster of successful long-term tlieters started 12 years ago. To be included, members must have maintained a 30-pound weight loss for at least a year. At 4,800 members, the Registry isnow the largest collection to date of long-term weight-loss data, says its cofounder James Hill, PhD, director of the Center for Human Nutrition at the University of Colorado Health Sciences Center and co-author of The Step Diet Book. The Registry’s key finding, he reports, is that "there are a lot of different ways to lose weight." The Registry entrants did "low-carb diets, low-fat diets, diets based on the food pyramid, the grapefruit diet, the beer diet ... it’s amazing how many different plans worked."
Even the venerable weight-loss program at the Duke Diet and Fitness Center in Durham, North Carolina, which recently had only a single low-fat, low-salt plan consistent with American Heart Association guidelines, now gives patients choices. "As of last year, we offer a wider range of options, including three different versions of low-carb diets," says Howard Eisenson, MD, the center’s director. "There has been emerging research showing that some people do very well with those plans."