Hunter Williams points to a study where non-exercisers' muscle ended up looking younger than the muscle of people who actually worked out. The peptide was SLU-PP-332. Researchers took muscle tissue from women who'd had hip surgery, women who didn't exercise, and treated it in a dish. The treated tissue started behaving as if it had been trained. Then they compared it to tissue from women who did exercise. The treated, sedentary tissue came out looking younger and better than the tissue from the women who'd actually been working out. Williams, who's tested it on himself, calls it another version of exercise in a pill. This was human tissue in a culture, not a full human trial, so hold it loosely. But it's the kind of result that stops you cold. — Hunter Williams (.@HunterEsoteric) on Ayik Kafa's LongeviLab podcast (.@longevilab)

Dr. Bakri says every peptide on the US market is made from raw materials in China. It doesn't matter where you bought yours - the origin is the same. • Active ingredients all from China • Pharmacy and gray market alike • US-made peptides barely exist The active ingredient for these drugs comes from China. Bakri says there is no such thing as an American-made peptide. The raw material ships over, then gets finished and packaged here. "Everything's Chinese peptides. There's no Guatemalan peptides." That covers the semaglutide in your compounded vial and the BPC-157 off a research website. One country makes both, then the labels change. A few groups want to make them here, but it would cost a fortune. Whatever the label on your vial says, it started in the same place. — Dr. Abud Bakri (.@AbudBakri) on the Huberman Lab podcast (.@hubermanlab)

Hunter Williams says there's a peptide that tricks your body into thinking it just exercised. Williams has tracked thousands of people using peptides, and the one he points to here is MOTS-c, a molecule your own body already makes inside its mitochondria. As you age, your levels fall. Supplement it back, he says, and it sends a signal that mimics a workout. "It creates a signaling cascade that tells the body that it's in a state of exercise." That means the same chemical response as a training session, better energy, higher metabolism, improved insulin sensitivity, without the session itself. It works better stacked with real exercise, and this is his experience and early research, not settled medicine. But even alone, he says the body responds as though you'd trained. The workout, it turns out, may be a signal you can send without moving. — Hunter Williams (.@HunterEsoteric) on Ayik Kafa's LongeviLab podcast (.@longevilab)

Saturday Morning Coffee Talk 6/6/26 x.com/i/broadcasts/1qKVmmkQB…

I played 17 years of football. Had 20 concussions. My Testosterone of zero at 27... My pituitary gland had basically stopped working. The hits finally caught up to me. That is how I found peptides and hormone optimization. Nobody comes to this space out of curiosity. They come because something is wrong.

Maxed out on Tirz at 15mg and still not losing. Before you switch to Reta or push higher, check this first. → Hormones optimized? → Thyroid optimized? Most people get better results at a lower dose once those are fixed.

Reader Mailbag 4 is up. We covered too much and the file was too big for X so head to YouTube. Anhedonia on GLPs, Reta and heart rate, hormones for women in their 20s and 30s, accidental peptide overdoses, and teen acne.👇 youtube.com/watch?v=5mUeLJNh…

Everyone is worried about the long term effects of GLPs. Lipids improve. Body fat drops. Brain clarity returns. Metabolic disease reverses. The people who struggle are the ones who skip protein, ignore hormones, and use it as a crutch instead of a tool. The GLP apocalypse is not coming.

Please Please Please Please Please Get your bloodwork done At least once a year, ideally quarterly ESPECIALLY if you are going to start DIYing your own PED/Peptide protocol

Peptides aren't magic. But they're the closest thing we have to restoring what modern life has taken from your biology.

The most common criticism of BPC-157 is that it causes cancer. So I pulled the study. 2018 study, C26 colon cancer mice. BPC-157 reduced muscle wasting, lowered TNF-alpha and IL-6, and prolonged survival. The tumors did not get worse. Survival actually improved.

Normal people packing for vacation: clothes, toiletries, snacks. Me: insulin cooler, 12 pens, ice packs, and a carry on full of supplements. Taylor: you forgot your toothbrush.

My fridge has more peptides than food. This is fine.

I answered every peptide question my audience sent in this month. 02:42 Can you use GLPs while trying to get pregnant? 04:48 My hunger increased on Reta but I am not losing weight, why? 05:26 Does Reta, Tirz, or Sema affect dopamine the most? 12:02 I switched from Tirz to Reta and now I have bad anger and anxiety, why? 13:26 Why do GLPs stop working when you cycle off and come back on? 16:06 GLPs are causing anhedonia, what can I use for fat loss instead? 18:44 Do women lose more on Tirz than Reta? 19:06 Do GLPs affect libido and sex drive? 19:24 My SHBG is 55 and my free T is low, how do I lower SHBG? 24:34 My doctor wants to start me at 60mg of testosterone, my friend says 200, who is right? 30:20 What is your go-to injury healing stack? 33:06 What is the peptide protocol for lupus and rheumatoid arthritis? 33:58 What stack helps with studying and cognitive performance? 39:08 Are there peptides that help with tinnitus? 41:10 What are your thoughts on rapamycin? 45:46 Should teenagers use peptides? 46:00 What peptides help with prostate issues?

Thymosin Alpha-1 has stronger human clinical evidence than almost any peptide in this space and nobody talks about it. → 1995 — median survival improved 12.6 months → 2010 — improved tumor response in 488 stage 4 melanoma patients alongside chemo → 2016 — improved recurrence free survival post hepatectomy in liver cancer patients Not FDA approved in the US. Approved in 35 other countries.