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Researchers at St. Michael's Hospital and the University of Toronto in Canada recently conducted a study, published in the British Medical Journal, to determine how different sugary foods affect blood glucose levels.
To do this, they examined 155 previous studies on the subject. The evaluations evaluated people with and without diabetes for up to 12 weeks.
After analyzing the results, they found that most foods that naturally contain fructose sugars, such as vegetables, fruits and natural fruit juices, do not affect blood glucose levels. However, foods with added glucose, such as soft drinks, breakfast cereals, baked goods and sweets, have detrimental effects.
The team said that foods that add "nutrient-poor" excess energy to the diet, especially sugary drinks, can be particularly harmful.
"These findings may help guide recommendations on important dietary sources of fructose in diabetes prevention and control," said study lead author John Sievenpiper in a statement. "But the level of evidence is low and more high-quality studies are needed."
Analysts have recognized some limitations, including small samples, short follow-up periods, and a limited variety of foods. But they noticed that their research was profound and complete.
Scientists now hope to continue their research and urge more health care providers "to be aware that the harmful effects of fructose sugars on blood glucose appear to be mediated by energy and food source."
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