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Fruit Sugar & Weight Loss

by
author image Viola Horne
When not working in her family-owned food and bar business, Viola Horne can almost always be found with a cookbook in one hand and a whisk in the other. Horne never tires of entertaining family and friends with both comfort food and unusual delicacies such as garlic cheese smashed potatoes and banana bacon pancakes.
Fruit Sugar & Weight Loss
Applesauce has high amounts of fructose. Photo Credit bhofack2/iStock/Getty Images

Fruit sugar, also known as fructose, is found in fruit and other foods. While the U.S. Department of Agriculture recommends eating a wide variety of fruits and vegetables, research shows that consuming too much fructose can lead to health conditions including obesity. If you are trying to lose weight, restricting fructose can help you win the battle.

Fruit Sugar

Fructose is a sugar found in fruit, fruit juices and honey. It's the sweetest of all sugars. Fructose has the same molecular formula as glucose, another simple sugar, but they differ in structure. Both sugars are considered carbohydrates and are important in human metabolism but they are metabolized in the liver differently. While an excess of glucose is shuttled out of the body by insulin, too much fructose is stored as fat. Some people may have a hereditary fructose intolerance.

Fructose Levels

Foods high in fructose include sodas, apples and applesauce, honey, pears, agave, fruit juices like apple and grape juice, grapes, dates, watermelon and mangos. Many processed, packaged foods -- like cereal and energy bars -- also contain high amounts of fructose due to the addition of high fructose corn syrup, a processed sugar containing 55 percent fructose. Fruits with the lowest amounts of fructose include cranberries, nectarines, apricots and clementines.

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Weight Loss

To lose a pound of fat, you must burn 3,500 more calories than you take in. In order to do that, many people either cut back on the number of calories eaten each day or increase their exercise to burn off more calories. Eating foods high in fructose, however, can subvert your attempts to lose weight because fructose is metabolized in the body differently than other sugars. A 2010 study conducted by researchers at Princeton University found that rats given high amounts of fructose had an increase in weight, body fat and triglyceride levels over rats fed the same amount of calories without the added fructose. The researchers concluded that high amounts of fructose can contribute to obesity. While eating fruit is still a good idea for overall nutrition, consuming foods with less fructose and more fiber can help increase weight loss.

Warnings

While some fructose is beneficial, too much fructose can lead to conditions such as gout, obesity, metabolic syndrome, cardiovascular disease and kidney failure. Even more importantly, a 2010 study published in “Cancer Research” found that fructose actually feeds and helps replicate pancreatic cancer cells. The researchers surmise that reducing fructose intake may be able to slow the growth of certain cancers.

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References

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