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...Even though differences in the underlying bony structure mean the recipient is unlikely to resemble the donor once the procedure is completed, it's impossible for the patient's sense of self not to be profoundly shaken. "Picture yourself as a person who has received a face transplant," says Dr. Eric Kodish, the team's lead bioethicist. "Now use your moral imagination...
...Dr. David Jenkins at the University of Toronto and St. Michael's Hospital and his colleagues report that a low-glycemic-index diet - including foods such as fruits, vegetables, beans, nuts, flaxseed and quinoa - is better at lowering blood glucose levels in patients with diabetes than a high-fiber diet. Patients in the study who were assigned a low-glycemic diet reduced their blood glucose levels, as measured by the amount of hemoglobin A1C in their blood, by 0.50%, compared to an 0.18% drop in similar patients eating a diet high in cereal fiber. (See the top 10 food trends...
Although the overall blood-sugar reductions were small, "this is a very important trial," says Dr. David Ludwig, director of the Optimal Weight for Life Program at Children's Hospital in Boston. Many previous studies in the field have been underpowered, involving small numbers of subjects, Ludwig says, but this trial was large and looked at important endpoints. "Its results carry additional weight compared to many of the past trials," he says...
...combinations it's eaten, and even what time of day a person eats. Al dente pasta, for example, has a lower glycemic index than fully cooked pasta, and for some people, eating later in the day raises the glycemic index of foods that would be lower if eaten earlier. Dr. David Katz, director of the Yale University Prevention Research Center argues, therefore, that it may be more instructive to focus on the "glycemic load" of an entire meal - a combined measure of the glycemic indices of individual foods - rather than looking at one food at a time. "Measuring the glycemic...
...which diet to try in the new year? Researchers say it's too soon to eschew a high-fiber (or low-fat or low-carb) plan to go low-glycemic load. "There are certain quirks that make [understanding] the glycemic index more complicated than understanding carbohydrates and fats," says Dr. John Buse, president of medicine and science at the American Diabetes Association. "The science in the low-glycemic index field is certainly less robust than in other nutrition management fields." Buse notes that the study's findings do not discount the value of a high-fiber diet in diabetes prevention...