A small, time-limited study conducted on overweight children and teenagers attempted to prove that sugar is metabolically toxic, regardless of quantity consumed. Several claims have been made about the toxic effects of sugar, most notably by Dr. Robert Lustig.

Dr. Lustig and fellow researchers limited sugar intake to 10% of daily calorie intake while keeping calorie intake and weight constant. For example, instead of eating chicken teriyaki, the children were told to eat turkey hot dogs.

Overall, a 53% decrease in fasting blood sugar levels was observed along with a drop in triglycerides, LDL, insulin levels and fat in their livers.

Finally, this limited study adds to the evidence that not all calories are equal and future studies may lead to changes in public health policy regarding sugar intake.

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