The evidence that fructose is a significant contributor to obesity and metabolic syndrome keeps growing. The FebruaryJournal of Clinical Nutrition carries a paper showing that it contributes to cardiovascular risk in teenagers when it is consumed in large amounts. What are large amounts? Answer: those are 'normal' amounts by American standards.
Fructose is often called "fruit sugar" because many domesticated fruits are rich in it. Fructose is also 'in' table sugar where it is chemically bound to glucose (blood sugar), and finally, perhaps most significantly, fructose is found in 'high fructose corn syrup' which is now the most-used food additive in America. There is an eerie correlation between thegradual introduction of high fructose corn syrup into the American diet in the mid 1980s and the gradual onset of the current American obesity epidemic.
How could fructose cause metabolic syndrome?
Some pretty good basic and clinical science suggests that it causes leptin and insulin resistance and does so to a significantly greater degree than does glucose. It doesn't take a genius to connect the dots between insulin resistance and metabolic syndrome.
So is all this real? Is fructose that bad? My take on it is that it's all about amount. Fructose has been a part of the human and animal diet for eons, but just as with glucose, when it's consumed in the form of actual food (the stuff that grows in the ground), it's harmless. When it is purified out or enzymatically synthesized from boiled corn glucose then it becomes potentially troublesome and finally, when that purified chemical form of fructose is dumped into the American food supply by the corn industry and when it is subsequently gulped own by teenagers, then it become much worse than troublesome.
It's painful to say this because I love caloric sweeteners too, but I think that human beings shouldn't eat anything sweeter than an apple.
FAT SCIENCE > Obesity Basics > Health Risks of Obesity > Obesity Syndromes > Metabolic Syndrome >