Word: fiber
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Dates: during 2000-2009
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...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...
Half of the patients in the study were placed on a low-glycemic index diet, and kept a journal of what they ate for six months. The other half consumed a "brown," or high-fiber, diet rich in cereal fibers including wheat, whole-grain breads, brown rice and potatoes with their skins, and also kept a journal of their food choices. All participants were told to avoid high-glycemic foods (the glycemic index of a food is typically measured as the amount by which a 50 g portion raises blood sugar compared with white bread or pure sugar), such...
After the six months, not only did the low-glycemic diet group show lower levels of blood glucose, but they also enjoyed a 1.7 mg/dL boost in HDL, or good cholesterol, while the high-fiber group experienced a .2 mg/dL drop in their HDL. Studies have shown that raising HDL levels is one way to prevent heart attacks, but it's not clear yet whether the current findings translate to any practical protection against heart disease. (See 9 kid foods to avoid...
...what does that mean for people who are deciding 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...
Topping Roberts' list of challenges: calling Verizon's and AT&T's billion-dollar bets on delivering TV service through fiber-optic lines. Verizon has signed up 1.4 million video subscribers, a good many of them in the Northeast, where Comcast rules. By 2010, Verizon expects its video, phone and Internet effort, dubbed fios, to reach 18 million households. AT&T is following along the same track, while EchoStar and DirecTV continue to add satellite-video subscribers...