How Diabetes May Be Affected By HGH and IGF-1
Diabetes Mellitus, (sugar diabetes) is a disorder in which the body is unable to process carbohydrates (sugars and starches) properly.
Usually digestion causes these carbohydrates to release glucose into the bloodstream. As the blood glucose level rises the pancreas is stimulated to secrete insulin. Insulin acts to reduce the sugar content in the blood by transporting the glucose from the bloodstream to the body's cells where it is used as fuel, or to the liver where it is stored until it is again needed as fuel.
When the pancreas does not produce enough insulin or if the body cannot use the insulin that is produced diabetes is the result. Sugar concentrations build up in the blood as the glucose circulates through the body without being absorbed.
The Types of Diabetes
Type 1 diabetes is brought about as a result of the pancreas not producing enough insulin. This type is frequently caused by an autoimmune response where the body's own immune system attacks and damages the pancreas.
Also called insulin resistant diabetes with this type of diabetes the pancreas functions properly. The pancreas produces and releases an adequate amount of insulin into the bloodstream but the cells become resistant to it. For this reason the body is not able to process glucose efficiently. Obesity can contribute to this problem because the numerous fat cells displace the insulin-receptor cells.
Insulin Resistance Increases With Aging
Aging causes the cells of the body to begin to lose their ability to properly utilize the insulin that the pancreas produces. This process usually makes itself known in those over 35 years of age.
As aging progresses the less efficient the cells become at utilizing the insulin in the blood and so the result is a bloodstream that contains high levels of both glucose and insulin. High levels of glucose or insulin can affect your metabolism as well as your heart and arteries.
Researchers of HGH (human growth hormone) and IGF-1 believe these therapies may improve diabetes.
Human Growth Hormone's Effect on Diabetes
Human growth hormone (Somatotropin) once thought of as a hormone only important for the normal growth and development of children is now being called the fountain of youth.
HGH is not the fountain of youth but it's the closest we have come to finding it. Groundbreaking research has found human growth hormone to be just as important for adults as it is for children. Clinical studies support the idea that decreased human growth hormone in the adult body plays a major role in bringing on the effects of aging. There are also clinical studies showing that restoring HGH can improve certain health conditions such as type 2 diabetes.
Some doctors have been concerned about giving human growth hormone (HGH) injections to diabetics. Previous studies, including Dr. Rudman's study using large doses of HGH injections showed that human growth hormone had caused increased insulin resistance in patients, so diabetics saw an increase in blood glucose levels. Dr. Bengtsson, an endocrinologist in Sweden showed similar results in his 6 week study.
Dr. Bengtsson's study had first shown that growth hormone caused increased insulin resistance, however, after 6 months of HGH therapy his patient's insulin sensitivity returned to where it had been before the therapy.
This 6 month study showed that growth hormone did not increase the patient's blood glucose or make the patient diabetic. Dr. Bengtsson says that it may very well be that the improvement in the patient's body composition (decrease in fat cells) after 6 months of therapy offset any negative effect that growth hormone may have had on insulin.
Can HGH Help Diabetes?
There are some indications that human growth hormone may actually improve diabetes. A study done at John Hopkins about the effects of HGH on blood glucose supports the idea that when elderly people have low human growth hormone they also have more intraabdominal fat and their insulin acts less well.
In this situation they have a tendency to have high blood sugar. If these elderly people are given growth hormone therapy correctly, rather than excessively, their blood sugar levels should improve rather than worsen.
Thierry Hertoghe, MD, who specializes in hormone replacement therapy in Brussels believes that human growth hormone helps to promote the action of insulin. He believes that because HGH helps to direct the insulin to put glucose into the muscular cells, cardiac cells, and nerve cells, rather than the fat cells of the body HGH may actually help to improve diabetes.
Greg Fahy, Ph.D., of the Naval Medical Research Institute has stated that he may have discovered a method to possibly cure adult-onset diabetes using HGH. He has stated that his own experiments have shown that human growth hormone is very beneficial for diabetes.
IGF-1 May Help Insulin Resistance
Human growth hormone exerts most of its effects through the powerful growth factor called IGF-1 (insulin-like growth factor #1).
As the name indicates IGF-1 (insulin-like growth factor-1) has properties similar to insulin and it has been shown to improve blood sugar profiles in type 2 diabetics. High doses of HGH have been shown to increase insulin resistance, but IGF-1 administration has actually normalized the insulin resistance in a group of volunteers.
Nelly Mauras and Bernard Beaufrere of the Nemours Children's Clinic in Jacksonville, Florida conducted a study where they looked at several areas. They studied the effect of IGF-1 on protein metabolism, IGF-1's ability to stop the protein-wasting caused by glucocorticosteroid drugs like prednisone, and the effect IGF-1 has on insulin and glucose metabolism. They divided the volunteers into three groups, one group received IGF-1 alone, one group received IGF-1 and prednisone, and one group received prednisone alone.
The study found that IGF-1 at 100 mcg per kilogram of body weight given twice daily enhanced the body's protein metabolism in the same way as human growth hormone did.
Like human growth hormone IGF-1 markedly decreased the protein breakdown in the volunteers who were taking prednisone but IGF-1 did not cause the diabetes-like effects of carbohydrate intolerance and insulin resistance as human growth hormone had done when given in combination with prednisone in an earlier study.
Instead, the test subjects who received IGF-1 and prednisone had normal glucose metabolism. The researchers saw this as remarkable because glucocorticoids are known to decrease insulin sensitivity and suppress the circulating insulin in the body. These researchers believe IGF-1 offers much promise in the treatment of protein catabolic states.
The Effects IGF-1 Has on Diabetes
Two 1997 double-blind clinical studies showed that recombinant IGF-1 injections can reduce the need for insulin in patients with insulin-dependent diabetes by up to 45%. One study involved 8 adults aged 24 - 49 and 43 children and teenagers aged 8 - 17.
While these trials lasted 19 days and 4 weeks and were short term trials, the fact that these test subjects saw such a drop in their insulin requirement and they had no serious side effects make IGF-1 a promising treatment of diabetes.
While in these short term studies IGF-1 therapy did not completely do away with the need for insulin, it did improve the control of blood sugar and so may help prevent the complications of diabetes.
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