I don't know why I can't reply to the Vitamin water comments above, so I'll do it here. MarkyD, Please don't act like you know anything about human biology by reading a label. By your critique of Vitamin water it shows that you don't. The sugar in vitamin water is required for the transport of vitamins into your body. Sugar which is fructose which is has the same chemical composition as glucose is only different from glucose in molecular structure. The sugars found in Vitamin Water are HFCS (High fructose corn syrup). Do you know where that comes from? Fruit, vegetables, and many other plants. HFCS is a mixture of glucose and fructose. Last time I checked your body needed glucose for energy. Now as for the fructose, I believe it was around 2000-01 that the American Heart Association concluded that, for most individuals, consuming fructose either pure or in the form of sucrose has neither beneficial nor adverse effects. Many but not all tissues take glucose and fructose form the blood for energy. The only difference is that fructose doesn't require insulin to metabolize itself. Even if it was just all fructose it wouldn't matter. Hell, they'd just market it to diabetics then. The fact of the matter is that there has never been any scientific proof that any sugar leads to obesity. Any carbs in this drink are caused purely by the sugars. They are not bad. As there are no specific dietary requirements or recommendations for fructose. Please MarkyD learn something before you show us all how uneducated you are.
But there's another reason to avoid HFCS. Consumers may think that because it contains fructose--which they associate with fruit, which is a natural food--that it is healthier than sugar. A team of investigators at the USDA, led by Dr. Meira Field, has discovered that this just ain't so.
Sucrose is composed of glucose and fructose. When sugar is given to rats in high amounts, the rats develop multiple health problems, especially when the rats were deficient in certain nutrients, such as copper. The researchers wanted to know whether it was the fructose or the glucose moiety that was causing the problems. So they repeated their studies with two groups of rats, one given high amounts of glucose and one given high amounts of fructose. The glucose group was unaffected but the fructose group had disastrous results. The male rats did not reach adulthood. They had anemia, high cholesterol and heart hypertrophy--that means that their hearts enlarged until they exploded. They also had delayed testicular development. Dr. Field explains that fructose in combination with copper deficiency in the growing animal interferes with collagen production. (Copper deficiency, by the way, is widespread in America.) In a nutshell, the little bodies of the rats just fell apart. The females were not so affected, but they were unable to produce live young.
"The medical profession thinks fructose is better for diabetics than sugar," says Dr. Field, "but every cell in the body can metabolize glucose. However, all fructose must be metabolized in the liver. The livers of the rats on the high fructose diet looked like the livers of alcoholics, plugged with fat and cirrhotic."
What It Means to You and Your Diabetes
As a person with diabetes, you know how important it is to control your blood glucose and insulin levels to avoid complications. So, it would seem that a lack of glucose and insulin secretion from fructose consumption would be a good thing.
However, insulin also controls another hormone, leptin, so its release is necessary.
Leptin tells your body to stop eating when its full by signaling the brain to stop sending hunger signals. Since fructose doesnt stimulate glucose levels and insulin release, theres no increase in leptin levels or feeling of satiety. This can leave you ripe for unhealthy weight gain.
The Fate of Fructose in the Body
Fructose requires a different metabolic pathway than other carbohydrates because it basically skips glycolysis (normal carbohydrate metabolism). Because of this, fructose is an unregulated source of acetyl CoA, or the starting material for fatty acid synthesis. This, coupled with unstimulated leptin levels, is like opening the flood gates of fat deposition.
To make matters worse, fructose consumption is tied to insulin resistance in rodents and increased triglyceride secretion (suggesting that it may have the same effect on humans, too). Considering that type 2 is a common co-morbidity of overweight and obesity, insulin resistance is common. Therefore, if fructose does, in fact, have the same insulin-resistant effect in humans as it does in rodents, individuals would be exacerbating the issue by consuming too much of it.
|reply to Cowboy86 |
im proof that sugar doesnt lead to obesity, i drink ~5.3 sodas per day (657 since Aug 7th 2007) and im not fat, sure i could lose a sawbuck but i mean come on
maybe im immune because i seem to be able to eat anything and not gain a pound, i ate McDonalds once per week for like a year and nothing happened