IGF-1 – insulin – represent a hormone similar to Human Growth Hormone, but first one being more important and powerful. IGF-1 – Insuline Growth Factor is one of the most important hormones in the human body, affecting almost all cells (muscle, cartilage, bone, liver, kidney, nerves and skin).
This hormone is widely used by athletes and bodybuilders.
Advantages that can be achieved at time of taking IGF-1 LR3 make it popular in bodybuilding.  Sportsmen usually report muscle growth, regeneration of nerve tissue, fat burning, reduction of protein breakdown, improvement of the production of white blood cells.
IGF-1 destination is muscle repair after injury and increase the rate of muscle growth from training.

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Vitamin D and IGF-1

To date, all the mini-articles I’ve written on Vitamin D are to do with ensuring sufficient intake and avoiding deficiency. This article is no different. But first, a brief description on IGF-1.

Insulin-like growth factor 1 is so-called because its structure resembles that of insulin. Created in the liver under direction of growth hormone, IGF-1 is a nicely anabolic hormone for pretty much every cell in the body, especially muscle. If you need a quick primer on vitamin D, check out the article Sun, sea and sex drive. As noted above, the study that article is based on found a correlation between sufficient vitamin D intake and serum androgen levels in men.

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Muscle-Building DNA Viruses, AWESOME!

Mice, manipulating DNA and muscle-building viruses: The next big scam or the future of bodybuilding?
by Paul Cribb, B.H.Sci HMSAST Director of Research
Hot on the heels of the myostatin scam, more research into genetically enhanced muscle growth has caught the attention of athletes across the world. You may have read some reports in the media of research by Dr. H. Lee Sweeney and colleagues that have recently shown that genetic manipulation combined with resistance training can dramatically accelerate muscle growth.
Dr. Sweeney heads the Physiology department at the University of Pennsylvania. The main interest of these scientists is in muscle regeneration from injury and disease. As part of this current research study, these scientists investigated the effects of transferring growth-factor genes into muscle cells to accelerate muscle growth during exercise. And, they have been successful.[1]
Using recombinant DNA technology, the researchers created a piece of DNA that codes for Insulin Growth Factor-1 (IGF-1); the muscle growth stimulator. DNA is the genetic code the body uses to construct proteins within the body. Imbedded within our DNA is a code that creates every protein that the body needs, whether it is an enzyme for breaking down food, a component of muscle tissue or a hormone. Recombinant technology “re-combines” the components of DNA to produce a blueprint for a protein that the scientists may want to examine; in this case, the DNA code was for IGF-1. Despite the recent media interest, the research involving the insertion of new DNA into muscles was first published in 1998.[2]

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