Trinity compound research profile
Humanin
Humanin is a small 24-amino-acid peptide that your own body already makes. What's unusual is where it comes from: it's coded not by regular DNA in the...
Research overview
Humanin is a small 24-amino-acid peptide that your own body already makes. What's unusual is where it comes from: it's coded not by regular DNA in the cell's nucleus, but by a hidden set of instructions inside your mitochondria — the tiny structures in cells often called the 'powerhouses' because they make energy (Karachaliou & Livaniou review, Biology 2023). So it's a completely natural substance, and scientists have also made a stronger lab-modified version called HNG.
Mechanism under study
Think of Humanin as a bodyguard for your cells. It attaches to specific docking points on the outside of cells and also acts inside cells to block the 'self-destruct' signal (a process called apoptosis) that stressed or damaged cells sometimes trigger (Biology 2023 review). By blocking this self-destruct signal, it may help protect cells from stress, improve how the body handles insulin (a hormone that manages blood sugar), and help keep the connections between brain cells intact.
Human evidence summary
There is no human clinical trial where people were actually given Humanin as a treatment for brain function or anything else — that kind of interventional study doesn't exist yet. What we do have is 'observational' human data: scientists have measured natural Humanin levels in people's blood and noticed that levels decline with age and relate to markers of mitochondrial and metabolic health (stress-resistance review; Aging 2020 lifespan study). That's useful information, but it's very different from testing whether giving someone extra Humanin actually helps them.
Preclinical evidence summary
In animal studies, Humanin (and the stronger HNG version) protected brain cells in models of Alzheimer's and Parkinson's disease, including when delivered through the nose (intranasal humanin in Parkinson's model). It also helped preserve the connection points between brain cells (synapses) in aging-related lab studies (astrocyte-released humanin study). On the flip side, one study found that Humanin's cell-protecting signaling can help certain brain tumors (glioblastoma) resist chemotherapy — a warning sign that 'protecting cells' isn't always a good thing (Cancers 2023).
Source material
Use the linked publications and records to evaluate study design, population, limitations, and relevance.