The sugar fructose is already well known to be highly detrimental to health in large doses and has been linked with contributing to ills including obesity, type-2 diabetes and an increased risk of heart disease. Further evidence again finds that weight for weight, fructose worsens disease markers more than glucose. It also contributes more to weight gain by reducing fat-burning and metabolic rate, in comparison to glucose.
Fructose is the main sugar found in fruit, but in this form, it is also accompanied by fiber and other nutrients and enzymes that make it easily digestible, with no depletion of minerals or rises in blood sugar levels.
Another form of fructose, high fructose corn syrup, however, has the opposite effect on the body. This artificial form of sugar, the main sugar in soft drinks, has a toxic effect on the body; it inhibits digestion, causes chemical imbalances and strips the body of vitamins and minerals.
This sweetening agent contributes substantially to our diets as an ingredient in foods such as breakfast cereals, cereal bars, baked goods such as biscuits and cakes, pre-prepared desserts, sweetened yoghurts and soft drinks, as well as some more savory foods including cooking sauces, condiments (e.g. ketchup) and crackers.
Some of the men consumed none of these drinks and were counseled on how to reduce the amount of fructose in their diets. The study lasted three weeks. A wide range of body measurements and biochemical parameters were checked as part of the study.
Here are some of this study's most notable findings:
This research involved feeding overweight and obese men and women fructose- or glucose-sweetened drinks for 10 weeks . Total amount of sugar represented 25 per cent of total energy requirements. So, someone who typically consumes 2,000 calories a day would have consumed 500 calories-worth or 125 grams of sugar.
The study participants were assessed with a range of measurements including:
The results showed that consuming fructose led to a significant reduction in both fat oxidation after eating and resting energy expenditure. These reductions were not, however, seen with glucose consumption. These findings suggest that, gram for gram, fructose has more fattening potential than glucose.
Admittedly, the amount of fructose consumed in this experiment was quite large (roughly equivalent to 3 cans each day or soda/soft drink). Nevertheless, the study does provide further evidence that fructose can harm health, and is generally more damaging in this respect than glucose.
Research Paper Details: