Goetzl. Edward J EJ; Yao. Pamela J PJ; Kapogiannis. Dimitrios D
The study found that people with COVID-19 who later develop long‑COVID have lower levels of the mitochondrial peptide humanin (carried in blood‑borne extracellular vesicles) during the acute illness, and those with ongoing brain‑related symptoms also keep low humanin levels. This suggests humanin could be a warning sign for who might get long‑COVID and its mental effects, but the research only measured it, it didn’t test any treatments.
Jelinek. Herbert F HF; Muteir. Issam I; Al-Aubaidy. Hayder H
The study used a machine‑learning model to find which blood markers best predict a heart‑risk score (AIP) across normal, pre‑diabetic, and diabetic people. It found that the mitochondrial peptide humanin is a top predictor in healthy individuals, while waist‑to‑height ratio is the strongest overall factor. As diabetes progresses, oxidative‑stress and inflammatory markers become more important.
Hyatt. Jon-Philippe K JK; Lu. Emilie J EJ; McCall. Gary E GE
In rats, long‑term heavy resistance training (10 weeks) makes the plantaris muscle bigger and shifts it toward a slower, more endurance‑type fiber. While early training boosts general mitochondrial growth signals, only after weeks does the muscle start making more of the mitochondrial peptide humanin (and MOTS‑c). This suggests that sustained strength training could raise humanin levels, which are linked to better metabolism and longevity.
Arneson. Douglas D; Zhang. Guanglin G; Ahn. In Sook IS; Ying. Zhe Z; Diamante. Graciel G; Cely. Ingr...
A mouse study found that the mitochondrial peptide humanin can reverse memory problems caused by mild brain injury by fixing the metabolism of brain support cells called astrocytes. This suggests humanin might one day be used to protect or improve brain function after injury, but it’s still early research and not ready for personal use yet.
Thiankhaw. Kitti K; Chattipakorn. Kenneth K; Chattipakorn. Siriporn C SC; Chattipakorn. Nipon N
Humanin is a tiny protein made by mitochondria that appears to protect brain cells and improve memory in animal studies. It reduces oxidative stress, inflammation, and cell death, and helps keep mitochondria and synapses healthy. Small versions of the peptide also show benefits in Parkinson’s and eye disease models. However, the paper is a review and does not give dosing or human trial results, so it’s more about potential than a ready‑to‑use protocol.
The study shows that the tiny protein humanin helps eye‑lens cells survive oxidative stress, which is a key factor in age‑related cataracts. When cells were stressed, they made more humanin, and giving extra humanin lowered harmful reactive oxygen species, protected mitochondria, and boosted the cell’s cleanup system. If humanin is blocked, these benefits disappear, indicating its direct protective role.
Katiyar. Rahul R; Ghosh. Subrata Kumar SK; Karikalan. M M; Kumar. Abhishek A; Pande. Megha M; Gemeda...
Researchers found that a tiny protein called Humanin naturally exists in buffalo sperm and that adding it at a specific low dose (5 µM) to the freezing solution makes the sperm survive the freeze‑thaw process much better, with higher movement, healthier mitochondria, less damage, and better ability to bind to eggs. While this was done in buffalo, the results hint that Humanin could help improve sperm freezing in other species, including possibly humans.
A modified peptide called S14G‑humanin (HNG) was tested in mice with gout‑like arthritis caused by urate crystals. The peptide lowered joint inflammation, pain‑related gait changes, and markers of oxidative stress, working through a pathway involving SIRT1. Its effects were similar to, but a bit weaker than, the standard gout drug colchicine.
Gong. Zhenwei Z; Goetzman. Eric E; Muzumdar. Radhika H RH
Humanin is a tiny protein made by mitochondria that can help protect heart cells when blood flow is blocked and then restored, like during a heart attack. It works by cutting down cell death, inflammation, and oxidative stress, and by improving how cells clean up damaged parts. The review gathers evidence that humanin can shrink heart damage and improve heart function in animal studies, but real‑world dosing and safety in people aren’t settled yet.
A modified humanin peptide (HNG) helps blood vessel cells clear harmful oxidized LDL by fixing a lysosomal enzyme (cathepsin D) through the FPRL1 receptor, which improves the cell's waste‑removal system and reduces lipid buildup.
Xie. Yi Y; Zhang. Jin J; Zhang. Min M; Jiang. Li L
A lab study found that a modified version of the tiny protein humanin (called HNG) can stop blood‑vessel muscle cells from turning into a growth‑focused state when they’re exposed to the hormone angiotensin II, which is linked to high‑blood‑pressure damage. It does this by cutting down internal oxidative stress, mainly by blocking an enzyme complex called NAD(P)H oxidase.
Merry. Troy L TL; Chan. Alex A; Woodhead. Jonathan S T JST; Reynolds. Joseph C JC; Kumagai. Hiroshi...
Mitochondrial peptides like humanin are naturally made in our cells and help protect against metabolic stress. People with obesity, diabetes, or who are older tend to have lower levels of these peptides, while exercise can boost them in muscle. In mouse studies, giving humanin improves insulin sensitivity and guards against age‑related metabolic problems, but human trials are still missing.
Lue. Yanhe Y; Swerdloff. Ronald R; Jia. Yue Y; Wang. Christina C
Humanin is a small protein made by testicular cells that helps protect sperm‑producing cells from damage caused by stress, heat, or chemotherapy in animal studies. Giving a lab‑made version of humanin (called HNG) reduced cell death in mouse testes, likely by blocking death‑triggering proteins and tweaking immune signals. This suggests humanin could one day support male fertility or protect the testicles, but human data and dosing guidelines are still missing.
Wu. Ying Y; Sun. Liankun L; Zhuang. Zhoudao Z; Hu. Xiaoqing X; Dong. Delu D
Humanin, a tiny protein made by mitochondria, appears to help lower insulin resistance, calm inflammation, and protect cells from dying, which could be useful for people with diabetes and for preventing related problems like strokes and heart attacks.
Jia. Yue Y; Swerdloff. Ronald S RS; Lue. YanHe Y; Dai-Ju. Jenny J; Surampudi. Prasanth P; Cohen. Pin...
Humanin, a tiny protein made by mitochondria, can stop heat‑related death of sperm‑producing cells in mice, but only if certain immune‑related receptors (IL‑27R, EBI‑3, and gp130) are present. Without those receptors the peptide doesn’t work, and it appears to act by turning on a cell‑survival signal (STAT3).
Peluso. Michael J MJ; Deeks. Steven G SG; Mustapic. Maja M; Kapogiannis. Dimitrios D; Henrich. Timot...
The study shows that people with long‑COVID who have brain‑related symptoms have lower levels of the protective peptide humanin in tiny particles released from brain cells, suggesting a link between reduced humanin and neuro‑issues after COVID. While it doesn’t test any treatments, it points to humanin as a possible marker or target for helping brain health in long‑COVID.
In a mouse study, a synthetic version of the natural peptide humanin (called HNG) was given by injection and it improved skin lesions that look like psoriasis, working about as well as the steroid drug methylprednisolone and lowering oxidative stress markers.
von Walden. Ferdinand F; Fernandez-Gonzalo. Rodrigo R; Norrbom. Jessica J; Emanuelsson. Eric B EB; F...
A single session of moderate‑intensity cardio (45 minutes cycling at about 70% of your max oxygen use) raises the blood level of the mitochondrial peptide humanin, which is linked to cell survival and metabolism. Lifting weights doesn’t have the same effect, and the peptide levels don’t seem tied to how fit you already are.
Alser. Maha M; Ramanjaneya. Manjunath M; Rizwana Anwardeen. Najeha N; Donati. Francesco F; Botrè...
The study found that regular endurance exercise changes two mitochondrial peptides: athletes have more humanin and less MOTS‑c than sedentary people, but the most intense endurance runners actually have lower humanin than moderate‑endurance athletes. MOTS‑c stays the same across athlete groups, and humanin and MOTS‑c levels are linked only in athletes. This suggests that chronic exercise reshapes these longevity‑related molecules, which could matter for metabolism and performance.
Shen. Meng-Yuan MY; Wang. Miao M; Liu. Zhihua Z; Wang. Shurong S; Xie. Ying Y
A special form of the peptide humanin (called HNG) can protect blood‑vessel cells from dying when they’re exposed to high sugar levels. It does this by stopping tiny particles released by cells (called endothelial microparticles) from carrying a harmful micro‑RNA (miR‑155) that triggers cell death. The work is done in lab dishes, not people, but it hints that humanin‑based supplements might help guard blood vessels in diabetes or high‑sugar situations.