New research
Every post on new research, newest first.
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Studies5 min read
Stroke data tie Cerebrolysin to better cognition after prior decline
A new analysis of the C-REGS2 stroke study found that Cerebrolysin was linked to better 90-day cognition, with the largest gains in people who had cognitive decline before their stroke.
Studies4 min read
What the studies show about CJC-1295 in 2026
One injection of CJC-1295 kept growth hormone and IGF-1 elevated for days in controlled trials, but no human study has connected that to muscle, recovery, or body-composition benefit.
Studies5 min read
Humanin protected neurons, ovaries, and eyes in new studies
Three 2026 studies tested Humanin's cell-protection claims in aging neurons, ovarian support cells, and a rat model of retinal degeneration. The work adds detail, but no human trial changed.
Studies5 min read
Retatrutide's 80-week trial shows weight loss and knee pain relief
In an 80-week trial, retatrutide led to weight loss up to 25% and reduced knee osteoarthritis pain more than placebo. A second diabetes trial used the same design.
Studies4 min read
Microneedling with GHK-Cu works in models but human trials lag
Two 2026 reviews find microneedling helps GHK-Cu cross the skin barrier in lab and pig-skin models, yet the human evidence remains small and mixed.
Studies5 min read
Tirzepatide users stay on treatment longer than semaglutide users
Three real-world studies looked at [tirzepatide](/peptides/tirzepatide) in routine care. They found higher adherence than semaglutide, Zepbound had the most super responders, and lithium monitoring matters.
Studies4 min read
Semax mentions in clinic notes are rising for cognition and stress
A preprint study used large language models to read de-identified clinical notes and found that documented Semax use is climbing. Patients most often cited cognition and mood or stress as their reasons.
Studies4 min read
What the studies show about AOD-9604 in 2026
AOD-9604 is a lab-made growth hormone fragment. In 2026, animal studies still show fat loss without insulin effects, but human research stopped at early safety reports.
Studies4 min read
Liraglutide lowered blood pressure and kidney markers in meta-analyses
Three new reviews looked at liraglutide in diabetic kidney disease, polyendocrine metabolic ovarian syndrome (PMOS), a hormonal condition formerly called PCOS, and skin reactions. The clearest finding was a 5.00 mmHg drop in systolic blood pressure in people with diabetic kidney disease.
Studies3 min read
Low kisspeptin-10 predicted early pregnancy loss in a study
Three new studies measured kisspeptin-10 as a blood marker instead of testing it as a treatment. Lower levels in early pregnancy were linked to a higher chance of pregnancy loss, while higher levels appeared in women with unexplained infertility and PCOS.
Studies5 min read
Semaglutide studies show kidney and heart changes beyond weight loss
Three new studies looked beyond the scale at semaglutide: a human kidney trial, animal heart failure models, and a UK digital weight-loss program. The results add detail on kidney blood flow and scarring, heart and liver remodeling, and the role of weight tracking.
Studies4 min read
Rat studies link Selank to less stress-related brain cell death
Two 2026 rat studies found that Selank partially corrected stress-induced cytokine changes in the hypothalamus and lowered caspase markers tied to brain cell death. A clinical note review shows documented use is rising, mostly for mood and stress.
Studies5 min read
Three 2026 studies tie Follistatin 344 to artery and prostate effects
Arteries and prostate cells took center stage in three 2026 studies. Follistatin 344 reduced artery plaque in one mouse model and improved blood vessel function in hypertensive rats, but a separate study linked follistatin to prostate cancer resistance.
Studies5 min read
Orforglipron 36 mg lowered weight and blood sugar more than 12 mg
A pooled analysis of six trials found that 36 mg of orforglipron produced larger reductions in weight, waist size, and blood sugar than 12 mg, with similar gastrointestinal side effects. A separate Japanese study reported mostly mild side effects over one year.
Studies4 min read
A resistance training review keeps MGF in the IGF-1 exercise story
A 2026 review of resistance training and nutrition names MGF as one of the local IGF-1 isoforms involved in exercise adaptation. Two other newly indexed studies cover liver and anti-inflammatory pathways, not MGF itself.
Studies5 min read
LL-37 runs high in oral cancer and low in severe sleep apnea
Three 2026 studies measured LL-37 in saliva and blood. Levels rose with oral cancer and fell as sleep apnea worsened, adding to mixed biomarker evidence.
Studies4 min read
New studies find MOTS-c acts as an immune defender and PCOS marker
Three new studies add an immune defense role for MOTS-c, a mitochondrial peptide. One found antibacterial activity, one linked lower MOTS-c to PCOS, and one used it to protect transplanted mitochondria in a rat heart model.
Studies5 min read
Testosterone and GH with hMG raised pregnancy rates in low responders
Three new studies looked at hMG from different angles. One clinic review found that adding testosterone gel and growth hormone to hMG raised pregnancy rates in younger women with low ovarian reserve.
Studies5 min read
New rat studies add kidney and vision protection to HNG evidence
Three new animal studies tested HNG for diabetic kidney disease, short-term kidney injury, and retinal degeneration. The kidney results were mixed. One eye study found a visual acuity gain.
Studies5 min read
A GHRP-2 test can sort two forms of adrenal insufficiency
A retrospective study in 69 patients found that a GHRP-2 cortisol cutoff below 12 micrograms per deciliter was specific for hypothalamic adrenal insufficiency when CRH results looked normal.
Studies4 min read
A mouse study links KPV to slower fat cell formation
A 2026 cell and mouse study found that KPV reduced fat cell formation and eased signs of obesity on a high-fat diet. The work adds a metabolic angle to a peptide mostly studied for gut, skin, and mouth inflammation.
Studies4 min read
Humanin reduced liver injury in a severe infection study
A mouse study found that Humanin lessened liver damage during a severe bacterial infection, and two new kidney papers add evidence for its protective effects.
Studies5 min read
Kisspeptin-10 kept LH up for 12 days in healthy men
Three new studies show what Kisspeptin-10 can and cannot sustain: daily 8-hour infusions kept luteinizing hormone elevated for 12 days in healthy men, while mouse and rat work adds new metabolic and developmental findings.
Studies4 min read
Two rat studies tie Selank to lower stress-induced brain inflammation
Two rat studies from 2026 looked at whether Selank shifts the brain's immune response after stress and early stroke. Both found a moderating signal, though the data stop short of showing repair.
Studies4 min read
A rat study links MK-677 to effort choices
A rat study found that moderate doses of MK-677 changed how rats weighed effort against reward. A review of six peptides found human evidence for MK-677 remains limited and mixed.
Studies6 min read
Retatrutide not detected in urine, reports show weight loss and DKA
A urine test designed for anti-doping could not find retatrutide in four people. Separate case reports describe a 58.8% weight loss in Prader-Willi syndrome and diabetic ketoacidosis in type 1 diabetes.
Studies6 min read
Early weight loss predicts six-month liraglutide response
Three new liraglutide reports looked at early weight loss as a predictor, adolescent safety at lower doses, and gut changes in mice. The clearest adult finding is that one-month weight loss tracked six-month response.
Studies5 min read
A case report ties sermorelin and GH use to a neck bone spur
A 2026 case report describes a 62-year-old man who had trouble swallowing because of a bony spike in his neck after about 20 years of growth hormone and sermorelin use. The report adds a clinical note to an evidence base that focuses mostly on hormone levels, not bone structure.
Studies5 min read
GHK-Cu skin effects depend on formulation and copper form
New GHK-Cu reviews agree on anti-inflammatory and skin matrix protection in lab models. Human trial evidence remains small and varies with the copper form and delivery system tested.
Studies6 min read
Clinic notes show BPC-157 use rising fastest among younger men
A 2026 clinical note review found documented BPC-157 use rose 33-fold over six years, with new users skewing younger and male. A separate rat tendon study showed TB-500 or the combination improved architecture more consistently than BPC-157 alone.
Studies6 min read
Semaglutide in sepsis, schizophrenia, and heart failure adds detail
Three recent studies looked at semaglutide in a rat model of heart injury and infection, interviews with people taking antipsychotics, and a review of obesity-related heart failure. They add detail without changing the main clinical findings.
Compound pages
The evergreen research summaries these posts build on.