Did AOD-9604 Help Weight Without Raising IGF-1, a Growth Blood Test?
Mice showed fat loss in early tests. The later human test showed no weight advantage.
What answer did the human study give?
People taking AOD-9604 lost about the same weight as people given a placebo, a pill with no drug. It is a lab-made peptide, or short chain of protein parts. Its 16-amino-acid chain contains sixteen protein building blocks copied from growth hormone parts 176 through 191.
In mice and cells kept in lab dishes, AOD-9604 helped break down old fat and slowed the making of new fat. It avoided the cell doorway used by full growth hormone. It also left IGF-1, a growth-related blood-test number, unchanged.
Most hopeful results came from mice and lab cells, not people. The compound has no approval as a drug or supplement and is still being studied. The effects page separates study results from what users say happened.
Why was AOD-9604 made from this part?
AOD-9604 is also written AOD9604, AOD 9604, or HGH frag 176-191. All four names point to the same short peptide. Its chain copies growth hormone parts 177–191 and adds one part at the front. A small bond within the chain helps it keep its shape [3].
Researchers wanted the hormone's effect on fat without its wider effects. Full growth hormone helps build tissue and raises IGF-1, a growth-related blood-test number. It may also make insulin work less well. AOD-9604 avoids the cell doorway used by the full hormone [3].
In fat cells, the copied part begins a message at the cell wall. The message slows a helper that cells use to make new fat [4]. Cells in the dish then made less new fat. Lab work can't tell you what your own body would do.
Did the mouse results hold up in people?
No. About 900 adults with obesity took part in roughly six trials. AOD-9604 caused much the same harm as placebo, but it did not beat placebo for weight loss [5]. The work stopped around 2007 [14].
The mouse studies had looked much better. After fourteen days, weight and fat fell in obese mice. Their fat cells made more of a beta-3 switch, which helps burn stored fat [1]. Mice without that working switch did not keep the weight change.
A second mouse study also found more fat burning and weight loss [2]. Those results explain why tests in people began, but they don't mean your body would react like a mouse. The human result is the one to keep in mind.
What is the compound not?
AOD-9604 is one small part of growth hormone, not the whole hormone. It doesn't make your body release more growth hormone. CJC-1295 is one drug made for that other purpose. AOD-9604 also leaves IGF-1, a growth-related blood-test number, unchanged [3].
The compound isn't a steroid or a food supplement. It is a research peptide tested in animals and people. Short human studies found few clear problems, while the weight-loss results were poor.
You can read the AOD-9604 research, reported AOD-9604 effects, and amounts used in studies. The AOD-9604 references page gives the paper behind each numbered mark. The site won't give you a dose or tell you to use the compound.