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Old 03-09-2012, 06:13 PM
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Default What exactly is hgh? P.I

WHAT EXACTLY IS HGH?

Human Growth Hormone (somatotropin - also referred to as rHGH, HGH, or GH) is created by the pituitary gland, the primary form consisting of a 191 amino acid chain. When we are young, HGH is in big part responsible for the proper growth of bones, muscle, and other tissues. Too little of this hormone and we remain dwarfs ? too much and we become giants and/or suffer from abnormal growth deformities. As we become adults, HGH is responsible for keeping muscles from wasting away, supports healthy immune system response, regulates aspects of our metabolic function dealing with increased fat metabolism and healthy body composition in later life, and maintains and repairs our skin and other tissues.

Our levels of HGH peak while we are adolescents and then begin to drop off sharply beginning in our 30?s. By our 60?s, our daily HGH secretion can be as little as 10% of what it was during our youth. Many of the markers of aging are affected by this decrease in HGH. Some of the results of this are:

? Increase in fat.
? Decrease in muscle and lean body structures.
? Decreased skin texture resulting in a less youthful appearance.
? Decreased bone density, onset of osteoporosis.
? Decreased brain function, loss of intellect with aging.
? Decreased sex drive.
? Decrease in overall physical and mental well being.
? Increase in sleep disorders, lower quality of sleep.
? Depression and fatigue.

The addition of supplemental HGH beginning in the latter 30?s can reverse or improve these symptoms in the majority of people attempting therapy. This is why you will often hear references with respect to HGH as ?the fountain of youth? and other similar terms. It can present a better quality of life for those aging.

HOW IS HGH RELEASED IN YOUR BODY?

HGH is secreted from the pituitary in a pulsatile fashion, generally following a circadian rhythm. A number of stimuli can initiate an HGH secretion, the most powerful being short duration, high intensity exercise and sleep. During the first few hours of sleep (deep sleep stages ? about 2 hours after you fall asleep), Somatostatin is turned off and GHRH is turned on, resulting in HGH pulses.

Growth Hormone Releasing Hormone (GHRH) produced by the hypothalamus stimulates HGH secretion. HGH, and IGF-1 create a negative feedback loop, meaning when their levels are high; it blunts release of GHRH, which in turn blunts the release of more HGH.

Somatostatin (SS), secreted by the hypothalamus as well as other tissues inhibits the secretion of HGH Somatostatin in response to GHRH and to other stimulatory factors such as low blood glucose concentration. High levels of IGF-1 also stimulate Somatostatin secretion.

Ghrelin is a peptide hormone secreted from the stomach. Ghrelin binds to receptors on somatotrophs and potently stimulates secretion of growth hormone. Ghrelin, as the stimulator for the growth hormone secretagogue receptor, potently stimulates secretion of growth hormone. The ghrelin signal is integrated with that of growth hormone releasing hormone and somatostatin to control the timing and magnitude of growth hormone secretion.

Once HGH is released, it is very short lived. It is generally metabolized and gone within a half-hour. During this half-hour, it travels to the liver and other tissues and induces them to secrete a polypeptide hormone called Insulin-like Growth Factor One (IGF-1).

HOW DOES HGH DO ITS WORK?

As mentioned above, HGH is short lived, but during its short half-hour or so activity per burst from the pituitary, it exerts itself through direct and indirect effects.

Its direct effects are the result of the HGH binding its receptor on target cells. Fat cells (adipocytes) as well as myocytes (muscle cells) have HGH receptors. On fat cells, HGH stimulates them to break down triglyceride and suppresses the fat cells ability to uptake circulating lipids.

Its indirect effects are in the process we described in the section above. When HGH travels to the liver, one of the results of its pass through the liver is the livers secretion of IGF-1. When this IGF-1 is secreted, it stimulates proliferation of chondrocytes (cartilage cells), which result in bone growth. It also plays a part in stimulating both the proliferation and differentiation of myoblasts (the precursor to skeletal muscle fibers). IGF-1 also stimulates amino acid uptake and protein synthesis in muscle and other tissues. Other tissues (muscle, etc.) are acted on by the presence of HGH, also inducing their release of IGF-1.

HGH stimulates protein anabolism in many tissues. This reflects increased protein synthesis, decreased oxidation of proteins, and increased amino acid uptake. As mentioned above, HGH enhances fat utilization by stimulating triglyceride breakdown and oxidation in fat cells (adipocytes).

HGH can affect the function of other hormones. HGH can suppress the abilities of insulin to stimulate the uptake of glucose in tissues and enhance glucose synthesis in the liver, though administering HGH actually stimulates insulin secretion and can create a state of hyperinsulinemia. This combination can lead to decreased insulin sensitivity, which in turn can lead to hyperglycemia. HGH can in the right circumstances also have a slight inhibitory effect on the function of our thyroid hormones (and actually vice versa as well), though this varies greatly from individual to individual. The vast majority of users have no need to worry about this at all. Others wishing to increase their metabolism or enhance certain of HGH?s functions may wish to consider low dose thyroid to their HGH cycle. We?ll offer some strategies later in this guide.

So, we are looking at a hormone that can assist with maintenance and healing of most of the body?s systems, can create new cartilage, bone, and muscle cells, can assist with protein uptake, decrease the oxidation of proteins, and can accelerate the rate at which fat is utilized. This paints the picture of the excitement that follows HGH. How then do we utilize this to our advantage? Let?s take a look at some strategies.

HOW DO I INCREASE MY LEVELS OF HGH?

There are a few strategies for increasing your own endogenous production of HGH. For the most part these aren?t going to give us a significant enough increase that would be necessary to promote all of the benefits mentioned above in their full measure, but for some (those still young) they will prove to be sufficient.

By adding several grams of Arginine and Glutamine to our daily supplement program, we can increase our levels of HGH. If we are very young or we are only in need of a modest jump in production, this may well do the trick. Short duration, high-intensity exercise (think heavy leg day ? puking and all), will trigger our bodies to secrete a significant amount of HGH

Another possibility is to inject various related hormones or peptides. There are many available, such as GHRH, GHRP (and all of its analogs), and the like. These peptides are available from research companies and when injected at doses of 100mcgs per day, sub-q it does seem to show promise in increasing levels of HGH. At this stage the game, there isn?t a real cost advantage to this over rHGH, so unless we are trying to promote some of the other forms of HGH in addition to the primary form, or if we are in a situation where a prescription for HGH is not an option, there is no clear advantage to this course of action. So aside from these strategies, what are we left with? To state it simply, we need to inject exogenous rHGH.

INJECTIBLE HGH AND ITS USE

True HGH only comes in the form of a lyophilized powder. Any other form that you see advertised or run across is NOT the real deal. The only way to administer true HGH is by sub-q or intramuscular injection. You will see studies that use IV as their method of administration, but that is certainly NOT recommended (in fact it is just outright crazy), nor necessary in any way for getting all of the benefits HGH has to offer.

HGH is somewhat fragile by nature, and it needs to be protected from light and heat. HGH should be stored between 36 and 46 degrees Fahrenheit at all times both before and after its reconstitution.

There are a couple of American brands of HGH that can survive in normal room temperature for a reasonable amount of time BEFORE reconstitution (Genotropin ? 3 months, Saizen ? until expiration), but for the most part it is better to err on the side of safe rather than sorry. All brands of HGH should be refrigerated after being reconstituted, and all brands should be protected from light at all times.

RECONSTITUTING AND MEASURING YOUR HGH

So you now have a vial HGH in the form of lyophilized powder. The amount of this powder should be indicated on the vial somewhere. It will either be stated in Units (IU's) or in Milligrams (mg). If it is stated in milligrams, the conversion is most commonly stated as 1mg = ~3IU's (its really more precisely 1mg=2.7IU). We will use this 1mg = 3IU's for our guide since this is the standard most commonly referenced by manufacturers.

What we need to do with this lyophilized powder is add some Bacteriostatic water (BW), Sterile Water, or even liquid vitamin B12 to reconstitute it and make it ready to inject.

To be continue...
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