Sugary drinks can pose the most risk



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Researchers say public health strategies to reduce the consumption of sugary drinks may be helpful because they create a higher risk of type 2 diabetes compared to most foods

Sugared beverages are at a higher risk of type 2 diabetes than most other foods containing fructose – a natural sugar – according to a new report by The BMJ.

The results suggest that fruit – and other fructose-containing foods – do not appear to have a negative effect on blood glucose levels, while sugary drinks and some other foods that add excess energy to the diet may have negative effects.

"These findings could help guide recommendations on important dietary sources of fructose in the prevention and management of diabetes," said Dr. John Sievenpiper, lead author of the study and researcher at the Center for Clinical Nutrition and Disease. modified risk factors of St. Michael's Hospital in Toronto, Canada.

"But the level of evidence is low and more high-quality studies are needed."

The role of sugars in the onset of diabetes and heart disease is causing much debate and more and more evidence suggests that fructose could be particularly harmful.

Fructose is naturally present in a variety of foods, including whole fruits and vegetables, natural fruit juices and honey. It is also added to foods, such as soft drinks, breakfast cereals, baked goods, sweets and desserts, in the "Free sugars" guide.

Current dietary recommendations recommend reducing free sugars, especially fructose, in sweetened beverages. Currently, it is unclear if this should be the case for all dietary sources of these sugars.

For example, researchers from St. Michael's and the University of Toronto analyzed the results of 155 studies evaluating the effects of different dietary sources of fructose on blood glucose levels in people with and without diabetes. The subjects tested were monitored for 12 weeks.

The results were based on four types of studies: substitution (comparison of sugars with other carbohydrates), addition (energy from sugars added to the diet), subtraction (energy from sugars removed from the diet) or ad libitum. (sugar energy freely replaced).

The results were glycated hemoglobin or HbA1c (amount of glucose attached to red blood cells), fasting glucose and fasting insulin (blood glucose and insulin levels after a period of fasting).

The results show that most foods containing fructose sugar do not have an adverse effect on blood glucose levels when these foods do not provide an excess of calories. However, some studies have shown a detrimental effect on fasting insulin.

The analysis of some foods suggests that fruits and juices, when these foods do not provide an excess of calories, can have beneficial effects on the control of blood sugar and insulin, especially in diabetics. However, foods that add excess nutrient-poor energy to the diet appear to have adverse effects.

The researchers conclude: "Until more information is available, public health professionals should be aware that the harmful effects of fructose sugars on blood glucose levels appear to be mediated by energy and metabolism. the food source. "

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