Fat on High Fructose Corn Syrup
posted: July 4, 2008
Originally thought to be a natural sugar, High Fructose Corn Syrup (HFCS) is in fact a refined sweetener and preservative linked to obesity and cardiovascular disease. HFCS can be found in abundance in many packaged food products such as soda pop, fruit-flavoured beverages, frozen foods, baked goods, chocolate bars, and ketchup, among many others.
Fructose Digests Poorly
Fructose occurs naturally in fruits and some vegetables. In small amounts it is generally thought to act as an intermediary in helping the body to process glucose properly. However, excess fructose is metabolized in the liver where it is readily converted to fat and sent into the bloodstream in the form of triglycerides (long associated with obesity and heart disease). On the other hand, glucose (found in more tradtional forms of sugar such as cane and beet sugar) is digested in the pancreas, regulated in the bloodstream by insulin, and then stored in the body as energy.
Empty Calories
Glucose intake also causes the increase of the hormone leptin (controls appetite and fat storage) and a decrease in the hormone ghrelin (controls hunger pangs). With fructose, the opposite occurs: leptin levels decrease and ghrelin levels increase. So essentially the consumption of HCFS delivers empty calories as it triggers sensations of hunger while storing fat at the same time.
Corn Syrup Intake Explodes
Since the introduction of corn syrup in the 1970s, fructose intake has increased dramatically. It is estimated the average annual intake of fructose has increased 60-fold per person over the last 35 years. Instead of digesting moderate amounts of fructose from natural sources, we are eating a wide variety of processed food saturated in HFCS. For example, a pound of fruit contains anywhere between 2 to 8 teaspoons of fructose; whereas a 12-ounce can of soda contains approximately 13 teaspoons of sugar in the form of HFCS.
Health Implications
The rise in fructose consumption has been linked to:
- increased obesity, especially among children who were not exposed to as much fructose 40 years ago
- heart disease due to increases in cholesterol and triglycerides in the bloodstream
- increases in abnormal blood clotting
- insulin resistance, which may lead to Type 2 Diabetes
- interference of body's ability to absorb copper (an essential mineral needed to create hemoglobin in red blood cells)
- an increase in damaged molecules (free radicals) that contribute to cancer and aging
Solutions
The simple remedy is to consume less refined sugar. This means reading food labels of processed foods to find where hidden sugars might be lurking. The recommended daily intake of added sugars is 10-12 teaspoons a day.
Acknowledgements
Bray, George A. "How Bad is Fructose?" http://www.ajcn.org/cgi/content/full/86/4/895
Challem, Jack. "Fructose: Maybe Not So Natural...and Not So Safe." http://www.thenutritionreporter.com/fructose_dangers.html
Dolson, Laura. "Fructose: Sweet, but Dangerous." http://lowcarbdiets.about.com/od/nutrition/a/fructosedangers.htm
McNally, Shelagh. "Corn is Making Us Fat." http://ca.lifestyle.yahoo.com/health-fitness/articles/diet/greenliving/healthnutrition--corn_is_making_us_fat
Severson, Kim. "Sugar Coated: We're Drowning in High-Fructose Corn Syrup. Do the risks go beyond our Waistline?" http://www.sfgate.com/cgi-bin/article.cgi?f=/chronicle/archive/2004/02/18/FDGS24VKMH1.DTL
Zeratsky, Katherine et al. "High-Fructose Corn Syrup: Why is it so Bad for Me?" http://www.mayoclinic.com/health/high-fructose-corn-syrup/AN01588
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