American preschoolers get about 14 to 17 teaspoons of added sugar a day, on average, mostly from fruit-flavored drinks, high-fat desserts and cola-type soft drinks which displace the grain, vegetable, fruit and dairy food groups and lower the quality of their diet, a Penn State study has shown.
Dr. Sibylle Kranz, assistant professor of nutritional sciences who led the study, says, "In contrast to other researchers, we found that although the most dramatic decrease in vitamin and mineral intakes were observed when children had added sugar levels of more than 25 percent of total calories, consumption of grains, vegetables, fruit and dairy products and the proportion of children receiving an adequate intake of calcium were low even at added sugar levels of less than 10 percent of calories."
"These results suggest that the new National Academy of Sciences Dietary Reference Intake which sets a cut-point of 25 percent or less of calories from added sugar are reason for concern," she adds. "The U.S. Department of Agriculture Food Guide Pyramid limits added sugar consumption to between 6 and 10 percent, and the World Health organization recommends limiting added sugar consumption to less than 10 percent."
Barbara Hale | EurekAlert!
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Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
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