human growth hormone is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Updated 2025-09-29. Numbers and descriptions here follow the published literature rather than marketing material.
Laboratory studies have reported that AOD9604 can increase lipolysis and reduce lipid accumulation in fat cells. The precise molecular target remains uncertain, and the compound does not appear to activate the growth hormone receptor in the same way as full-length hGH. Proposed mechanisms include effects on beta-adrenergic signaling and enzymes involved in fatty acid synthesis, but these pathways are not firmly established. Because most evidence comes from cell and animal models, whether the same effects occur in humans is an open question.
Clinical development of AOD9604 included trials in people with obesity, but the results did not lead to approval as a prescription medicine in major markets. Interest later shifted to research settings and to unapproved products marketed for body composition. Regulatory agencies have questioned whether the peptide qualifies as a dietary ingredient, and some have issued warnings about its presence in supplements. Long-term human safety data are limited, and questions about efficacy, dosing, and target populations remain unresolved.
AOD-9604 is a synthetic peptide that corresponds to a short section of human growth hormone. It is commonly identified as hGH fragment 176-191 because its sequence matches residues at the C-terminal end of the hormone. The molecule contains sixteen amino acids and is made by solid-phase peptide synthesis. Researchers study it for metabolic effects rather than for the growth-promoting actions associated with full human growth hormone. Its small size distinguishes it from the complete 191-amino-acid hormone.
Several names appear in scientific and commercial settings. AOD9604 and AOD-9604 are development codes used interchangeably, while hGH fragment 176-191 describes the same region. The peptide includes a disulfide bond between two cysteine residues, which helps shape its three-dimensional structure. Different suppliers may provide acetate or other salt forms, and purity can vary. These differences matter because analytical tests and biological assays can respond to the specific form being studied.
Early interest in AOD-9604 centered on whether a fragment of human growth hormone could influence fat metabolism without the broader effects of the full hormone. Cell and animal studies reported changes in fat storage and breakdown. Human trials followed, but the results were not strong enough to secure regulatory approval. The compound remains available for laboratory research, and its clinical potential is still described as uncertain. Studies continue to examine its activity and safety profile.
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic peptide | Derived from C-terminal region of human growth hormone |
| Approximate molecular mass | About 1.8 kDa | Varies with sequence length and counterions |
| Confirmed receptor target | None established | No confirmed growth hormone receptor agonism |
| Reported in vitro activity | Lipolysis stimulation and lipogenesis inhibition | Observed mainly in adipocyte models; human relevance uncertain |
| Regulatory status | Not approved as a drug in major markets | May be treated differently across jurisdictions; not a recognized dietary ingredient in some countries |
==== Food sources ==== Potassium is present in all fruits, vegetables, meat and fish. Foods with high potassium concentrations include yam, parsley, dried apricots, milk, chocolate, all nuts (especially almonds and pistachios), potatoes, bamboo shoots, bananas, avocados, coconut water, soybeans, and bran. The United States Department of Agriculture also lists tomato paste, orange juice, beet greens, white beans, plantains, and many other dietary sources of potassium, ranked in descending order according to potassium content. A day's worth of potassium is in 5 plantains or 11 bananas.
=== Alzheimer's disease === Alzheimer's disease is the most common neurodegenerative disease and is the most common form of dementia in the elderly. The disorder is characterized by progressive loss of memory and various cognitive functions. It is hypothesized that the deposition of amyloid-β peptide (40-42 amino acid residues) in the brain is integral in the incidence of Alzheimer's disease. Accumulation is purported to block hippocampal long-term potentiation. It is also possible that a receptor for amyloid-β oligomers could be a prion protein.
where "ads" stands for "adsorbed", "m" stands for "monolayer equivalence" and "vap" is reference to the vapor pressure of the liquid adsorptive at the same temperature as the solid sample. The unit function creates the definition of the molar energy of adsorption for the first adsorbed molecule by:
Sources: en.wikipedia.org
== Further reading == "Doctor contests closing of Lake Wales OB unit". The Ledger. September 2, 1999. Retrieved May 10, 2025. Bygrave, William (September 9, 1999). "Forum set on future of Lake Wales hospital". The Ledger. Retrieved May 10, 2025. Conners, Robert (August 20, 2023). "New EV "Fast Chargers" Added at Lake Wales Hospital". Lake Wales News.Net. Retrieved August 14, 2025. "AdventHealth Lake Wales Leads County With Groundbreaking "Stomach Pacemaker" Surgery". Lake Wales News.Net. August 4, 2025. Retrieved August 5, 2025. "AdventHealth Lake Wales Supports Local Elementary School With Huge Donation of Supplies". Lake Wales News.Net. August 9, 2025. Retrieved August 14, 2025.
=== January === 1 January – A visit by Thor the Walrus to Scarborough harbour, North Yorkshire overnight on New Year's Eve results in the town's New Year fireworks celebrations being cancelled to let the walrus rest for his journey to the Arctic. He was previously spotted at Pagham Harbour, Calshot, Hampshire in December 2022. 2 January Three people are killed by a fire at the New County Hotel in Perth, Scotland. Thor the Walrus makes an appearance in Blyth, Northumberland. 3 January – 40,000 railway workers who are members of the RMT union hold the first of two 48-hour strikes this week, severely disrupting train services in England, Scotland, and Wales. 5 January The government confirms it will not go ahead with a plan to privatise Channel 4. The Met Office confirms that 2022 was the UK's warmest year since records began in 1884, with an average annual temperature above 10 °C (50 °F) for the first time. BioNTech announces a strategic partnership with the UK government to provide up to 10,000 patients with personalised mRNA cancer immunotherapies by 2030. 6 January – COVID-19 in the UK: Almost three million people were infected with COVID-19 over the Christmas period (the highest since July 2022), the latest Office for National Statistics data suggests, with one in 20 having the virus in England, one in 18 in Wales, one in 25 in Scotland and one in 16 in Northern Ireland. XBB.1.5, the new Omicron variant of the virus, is believed to be responsible for one in 200 infections in the UK.
=== Primary metabolites === Primary metabolites are compounds made during the ordinary metabolism of the organism during the growth phase. A common example is ethanol or lactic acid, produced during glycolysis. Citric acid is produced by some strains of Aspergillus niger as part of the citric acid cycle to acidify their environment and prevent competitors from taking over. Glutamate is produced by some Micrococcus species, and some Corynebacterium species produce lysine, threonine, tryptophan and other amino acids. All of these compounds are produced during the normal "business" of the cell and released into the environment. There is therefore no need to rupture the cells for product recovery.
A physical examination, sometimes combined with a psychological examination, can determine whether the onset of the disease has begun. Excessive unintentional movements of any part of the body are often the reason for seeking medical consultation. If these are abrupt and have random timing and distribution, they suggest a diagnosis of HD. Cognitive or behavioral symptoms are rarely the first symptoms diagnosed; they are usually only recognized in hindsight or when they develop further. How far the disease has progressed can be measured using the unified Huntington's disease rating scale, which provides an overall rating system based on motor, behavioral, cognitive, and functional assessments. Medical imaging, such as a CT scan or MRI scan, can show atrophy of the caudate nuclei early in the disease, as seen in the illustration to the right, but these changes are not, by themselves, diagnostic of HD. Cerebral atrophy can be seen in the advanced stages of the disease. Functional neuroimaging techniques, such as functional magnetic resonance imaging (fMRI) and positron emission tomography (PET), can show changes in brain activity before the onset of physical symptoms, but they are experimental tools and are not used clinically.
Sources: en.wikipedia.org
Interstitial fibrosis, which is nonspecific, having been described in congestive heart failure, hypertension, and normal aging. Subepicardial fibrosis, which is associated with non-infarction diagnoses such as myocarditis and non-ischemic cardiomyopathy.
== Awards == Borden Award (American Chemical Society) 1957 Bond Award (American Oil Chemists’ Society) 1973 Agricultural and Food Chemistry Award (American Chemical Society) 1973 Senior Scientist Award (Alexander von Humboldt Foundation) 1981 Macy-Gyorgy Award for Research in Human Milk and Lactation 1997 Penn State Alumni Fellow Award 2001 Penn State Distinguished Alumnus Award 2002
== Culinary uses == Sirloin steak has many culinary uses. It is typically cooked using dry-heat methods, such as grilling, broiling or pan-searing. The sirloin steak cut may be served as a steak, or as a component of dishes such as kebabs, stir-fries and sandwiches where it is cut into smaller portions.
Sources: en.wikipedia.org
AOD9604 is a synthetic peptide based on a C-terminal segment of human growth hormone. It is manufactured by chemical peptide synthesis rather than extracted from human tissue. The sequence is often described as hGH fragment 176–191 or a close variant.
It is not approved as a prescription drug in the United States or the European Union for any indication. Regulatory status can differ by country, and it is often sold as a research chemical or in unapproved products. Such products are not equivalent to an approved medicine.
In the studies reported so far, AOD9604 does not appear to act through the growth hormone receptor and has not shown the typical IGF-1 increase caused by full-length hGH. Human data are limited, so this remains an area of uncertainty. It should not be assumed to have the same effects as hGH.
AOD-9604 is a synthetic peptide fragment of human growth hormone. It corresponds to the C-terminal region known as hGH 176-191 and is studied for metabolic effects. It is not an approved therapeutic drug.