*New data shows GLP-1 agonists match caloric restriction — not extra — muscle loss.*
As of WED, MAY 20, 11:32 AM · New Brief Daily
Last updated May 20, 2026 — I read this morning's peptide research and picked the items that mattered. Fresh brief tomorrow.
*New data shows GLP-1 agonists match caloric restriction — not extra — muscle loss.*
Research VialsA research review of GHK-Cu — the copper-binding tripeptide studied for collagen synthesis, wound healing, gene expression modulation, and anti-inflammatory signaling.
PubMed · Cell reports. MedicineJi L et al., Cell reports. Medicine · 2026 Apr 21. PMID 41956096.
Frontiers in PharmacologyResearchers used a large global patient network to study tirzepatide (a dual GLP-1/GIP receptor agonist) in people with chronic obstructive pulmonary disease. They found meaningful improvements in clinical outcomes — adding respiratory health to a growing list of benefits beyond weight loss.
Peter AttiaIn AMA #83, Peter Attia calls peptides 'a legitimate, powerful class of therapeutics' — but draws a hard line between the evidence-backed subset and the noise. Worth reading for anyone trying to separate signal from hype in the current peptide boom.
Aging CellFisetin (a plant-derived senolytic compound) cut premature vascular aging caused by doxorubicin — a common chemotherapy drug. The mechanism appears to involve suppressing senescent cell accumulation and reducing mitochondrial oxidative stress in blood vessels.
Lifespan.ioBeijing has launched its first national competency-based education program in longevity medicine. The move signals a serious institutional commitment to integrating healthy aging into mainstream clinical practice — at scale.
Dr Trevor BachmeyerAlzheimer’s Isn’t a Protein Problem, It’s an Energy & Insulin Resistance Problem (My Full Root-Cause Protocol) In this episode I explain that Alzheimer’s and dementia are being incorrectly taught (and treated) as amyloid/tau “protein disea
Regan ArchibaldAre you eating clean, exercising consistently, and still struggling with low energy, stubborn weight gain, brain fog, or blood sugar issues? In this video, I break down what MOTS-c peptide is, how this mitochondrial signaling molecule works
Thomas DeLauerUse Code THOMAS for $10 off Your First Order from Phi Health: https://www.phi.health/thomas This video does contain a paid partnership with a brand that helps to support this channel. It is because of brands like this that we are able to p
Dr Jones DCBook your free discovery call *HERE:* https://drjonesdc.com/yt1d If you’re taking a GLP-1 medication like Ozempic, Wegovy, or Zepbound, you may have heard concerns about blindness risk. In this video, I break down what the data actually s
Biohacking SpecialistApply here to work 1:1 with me and my team: https://linktw.in/TQNxOy If you want to lose 30+ LBs, optimize your hormones and take your physique to the next level using and “enhanced blueprint, watch this video next: https://youtu.be/PjvW
Dave AspreyYour relationships are reshaping your biology in ways that diet and exercise alone cannot fix, and the science behind it will change how you think about longevity, metabolism, and what it actually means to be healthy. Host Dave Asprey
Rena Malik MDIn this episode, Dr. Rena Malik sits down with Dr. Irwin Goldstein to explore the complex effects of commonly prescribed medications—like SSRIs and finasteride—on sexual function. They break down the science behind persistent sexual side ef
Dr LivingoodThe Ask DLG Show Episode #390 is streaming LIVE at 8:30 AM EST! Dealing with a health issue? Need expert advice? Join The Ask DLG Show at 8:30 AM EST. 😱 WHAT'S IN YOUR ENERGY & RECOVERY DRINKS? Take a quick scan: Energy drink: caffeine +
Regan ArchibaldTrying to figure out if MOTS-c is actually FDA approved or legally available through compounding pharmacies? In this video, I break down the major April 2026 FDA regulatory update, explain the difference between Category 1 and Category 2 pe
Research VialsWhy third-party testing is the gold standard for research peptides. HPLC methods, mass spec verification, COA interpretation, and how to confirm test authenticity.
Tim FerrissCathy Lanier is the Chief Security Officer of the National Football League, where she oversees security across the league office and all 32 clubs. Before the NFL, she served as Chief of Police of Washington, D.C., from 2007 to 2016 — the fi
Dr Nick Zyrowski🔥 Fasting Electrolytes - https://bit.ly/3YCjHSc How To Do Sardine Fasting | The Sardine Fast Explained | Dr. Nick Zyrowski Have you heard of the Sardine Fast or the 72 Hour Sardine Challenge? In this video, Dr. Nick Zyrowski explains how
BluePrint (Bryan Johnson)Bryan Johnson breaks down what actually causes skin aging and which ingredients have real evidence behind them. Most creams overpromise — this review focuses on the narrow set of actives that hold up to scrutiny.
Aging CellA new single-cell transcriptomics study finds that senescent cells (the damaged, inflammation-driving cells linked to aging) are far more diverse than previously thought. The findings point to new regulatory networks — and potential senolytic targets — that broad-brush approaches may miss.
Lifespan.ioCyclarity Therapeutics has released Phase 1 data showing its lead compound UDP-003 drives measurable excretion of oxidized cholesterol — a toxic lipid implicated in cardiovascular aging. This is a proof-of-mechanism readout, not an efficacy trial, but it validates the core hypothesis.
Nature AgingResearchers found that aged muscle stem cells use glutamine (an amino acid) through a fat-synthesis pathway — not direct fuel burning — to maintain their function. The finding opens a metabolic angle on why muscle regeneration slows with age.
BluePrint (Bryan Johnson)Bryan Johnson details the bone density protocol that put him in the 99th percentile for his age group. Higher bone density is linked to a 23–51% lower risk of death in older adults — making this one of the most underrated longevity levers in the optimization space.
Aging CellExercise releases tiny vesicles called exosomes that carry eNAMPT — a protein that activates SIRT1 (a key longevity enzyme) in the liver. In aged mice, this pathway countered liver fat accumulation and scarring, offering a molecular explanation for how exercise protects the aging liver.
Nature AgingScientists developed an injectable nanoprobe that flags senescent tissue and fibrosis through a simple urine test. The tool could make it far easier to track senolytic treatment response in clinical trials — a major bottleneck in the field right now.
Peter AttiaPeter Attia's AMA #84 covers NAD+ supplementation, metabolic health markers, and how to make strength training more time-efficient. NAD+ (a coenzyme central to cellular energy and repair) has a growing body of longevity research behind it — Attia gives a characteristically skeptical read of where the evidence actually stands.
Research VialsA ranked review of peptides studied for tendon, ligament, muscle, and bone repair — BPC-157, TB-500, GHK-Cu, and growth hormone secretagogues.
BluePrint (Bryan Johnson)Data from 3,143 US counties ranks sleeping under 7 hours as the third strongest predictor of a shorter life — behind only smoking and obesity. Bryan Johnson breaks down the mechanisms and the practical levers most people ignore.
Research VialsA detailed breakdown of the three main forms of Epitalon (a tetrapeptide studied for telomerase activation and longevity). The guide covers structural differences, solubility, and what the research literature says about each variant — useful for anyone navigating the form factor question.
Research VialsAOD-9604 (a modified fragment of HGH studied for fat metabolism) and semaglutide (a GLP-1 agonist) take very different approaches to metabolic intervention. This comparison maps out the mechanism, evidence base, and research context for each — helpful framing given how much semaglutide is dominating the conversation right now.
Peter AttiaAttia argues that genetic testing's value depends almost entirely on how carefully you interpret and act on results. A grounded, skepticism-first take on a space that's flooded with overpromising consumer products.
Fight Aging!A clear-eyed survey of where cellular senescence research stands in 2026. The dasatinib + quercetin combination remains the only senolytic pair to reach human trials. This piece asks why the field isn't moving faster.