Category
Growth hormone and recovery
26 plain-language articles on growth hormone and recovery — the physiology, the compounds, and what the evidence actually shows.
26 articles
CJC-1295 no DAC (Mod GRF 1-29) — what the modified GHRH actually doesYour hypothalamus produces a 44-amino-acid peptide called growth hormone-releasing hormone. It makes the peptide, releases it into the portal blood supply, and sends it down to the anterior pituitary, where it binds to GHRH receptors on somatotroph cells and triggers the release of growth hormone. This signal has been running since before birth. It governs the GH pulses that drive tissue repair, lean mass maintenance, recovery from injury, and the metabolic processes that decline with age. It is one of the most fundamental regulatory signals in the human body.7 min readCJC-1295 with DAC — what the half-life extension actually changesThe problem with most peptides as drugs is that they fall apart before they can do their job. Inject a peptide into the subcutaneous tissue, and between the proteases in the interstitial fluid, the peptides circulating in the blood, and the rapid renal clearance of small molecules, what you've injected may have a measurable half-life measured in minutes. Endogenous GHRH — the hypothalamic signal that drives GH release — survives fewer than ten minutes in circulation. Sermorelin, the pharmaceutical GHRH fragment, is similarly short-lived. These are not defects so much as features of the natural pulsatile system, but they create a significant practical problem if you want a compound that lasts long enough to be administered once a week instead of three times a day.8 min readDAC vs no DAC — what the half-life difference means in practiceYou've done enough reading to know there are two versions. CJC-1295 with DAC and CJC-1295 without DAC — also called Mod GRF 1-29, also called Modified GRF 1-29, also found in enough abbreviations and vendor names that the nomenclature itself starts to feel like a test. You've probably seen protocols recommending one and protocols recommending the other, sometimes with confidence that feels disproportionate to the evidence available. The distinction between them is real and pharmacologically significant. But it's a trade-off, not a verdict.7 min readFollistatin 344 — what the natural myostatin inhibitor actually doesThe bruise that won't heal. The workout that used to be maintenance and now leaves you wrecked for three days. The slow, unwelcome arithmetic of losing muscle mass even as you eat enough protein and train consistently. For some people these experiences arrive in their forties, for others earlier, and for people living with muscular dystrophy or other wasting diseases they arrive much sooner and with much higher stakes. The body has more than one mechanism for limiting muscle growth, and at the center of several of them is a protein your body already makes — one that was studied for its role in reproduction long before anyone thought about its connection to muscle.8 min readWhat people are reporting about Follistatin 344This article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.8 min readFollistatin vs myostatin antibodies — different strategies, similar limitsThe field had a target it was confident in and a question it thought it knew how to answer. Myostatin suppresses muscle growth. Block myostatin, build muscle. The biology said yes. The mouse data said yes, emphatically and reproducibly. The Belgian Blue cattle had been demonstrating yes in Belgian fields for a hundred and fifty years without anyone asking for a peer review. What remained was engineering — picking the right pharmacological strategy for blocking a signaling protein in a human being, running the trials, publishing the results. Straightforward science.7 min readGHRP-2 in plain English — the GH releaser with appetite and cortisol bonusYou're three weeks into a recovery protocol and you notice something unexpected: you're hungry in a way you weren't before. Not the ordinary hunger that builds over hours since your last meal. Something more insistent, arriving earlier, harder to dismiss. Your sleep feels deeper. Your morning mood is better. But the hunger is real, and it wasn't on your list of expected effects.8 min readGHRP-6 in plain English — the appetite-stimulating GH releaserYou take the injection and forty-five minutes later you're standing in front of an open refrigerator, not because you're hungry in the ordinary sense but because something in your body has decided, with unusual conviction, that food is necessary right now. You weren't thinking about eating before you injected. You're thinking about nothing but eating now. The sensation is specific enough to be disorienting — not the soft background hum of an appetite building over hours, but something that arrives like a signal.8 min readHexarelin — the potent GH secretagogue with cardiac effectsThe Italian cardiologists were studying a peptide they'd initially investigated for growth hormone deficiency, and they kept finding something they hadn't expected in the heart. Not a side effect in the ordinary sense — a therapeutic signal. Animal models with damaged cardiac tissue showed improved contractility. Preclinical data suggested the heart was responding to Hexarelin through a mechanism that wasn't the growth hormone axis at all. A peptide built to stimulate GH was doing something in cardiac muscle that GH itself didn't fully explain.5 min readHow to read your IGF-1 lab — what the number actually tells youYou've been on a GH-axis peptide protocol for eight weeks. You get your labs back. There's a number — IGF-1, 187 ng/mL — and next to it a reference range that tells you you're normal. Or maybe you're slightly above normal. Or maybe you're right in the middle and your provider's office calls it fine. And you're sitting there trying to figure out whether "fine" actually means anything, whether this number went up from wherever you started, whether you're in the right place or the wrong one, and what you're actually looking at.8 min readWhat people are reporting about IGF-1 LR3This article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.8 min readIGF-1 LR3 in plain English — what an engineered IGF-1 actually doesYour doctor tells you your IGF-1 is on the low end of normal. You nod, leave the office, and spend the next hour trying to understand what that actually means. The name is impenetrable — Insulin-like Growth Factor 1 — and every search result either leads to pediatric growth disorders or to bodybuilding forums full of syringe photos. The two contexts seem completely unrelated, and yet they're orbiting the same molecule for overlapping reasons that are worth understanding clearly.8 min readIGF-1 LR3 vs IGF-1 DES — the localization questionYou've read enough about IGF-1 to understand the appeal. You also understand that the compound sitting in a vial has to actually reach the tissue you care about, and that the pharmacology of getting a peptide from an injection site to a receptor is more complicated than it sounds. The engineer in you wants to know: is there a version of this that goes where you point it?7 min readThe Ipamorelin + CJC-1295 stack — why everyone runs itThere's a moment in most people's introduction to GH peptides when they discover that nobody seems to use ipamorelin alone. Every forum, every compounding clinic protocol, every practitioner guide points to the same pairing: ipamorelin with CJC-1295. The combination has become so standard that the two compounds are often discussed as though they're a single thing. But the reason this combination became dominant is not arbitrary, and understanding the mechanism behind it explains why the pairing is more than a convention — it's mechanistic logic that follows from how growth hormone release actually works.3 min readWhat people are reporting about IpamorelinThis article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.5 min readIpamorelin in plain English — the cleanest of the secretagoguesIn the late 1990s, a team of researchers at Novo Nordisk was working through a screening problem. They had growth hormone-releasing peptides — GHRPs — that worked. GHRP-2, GHRP-6, Hexarelin: all of them stimulated pituitary GH release reliably, and some of them did it dramatically. The problem was that "worked" turned out to cover too much territory. The same compounds that elevated GH also elevated cortisol. They elevated prolactin. GHRP-6 in particular produced significant appetite stimulation — not a mild increase but a noticeable, sometimes uncomfortable hunger response. The researchers had tools that did the thing they were designed to do, but they did it while simultaneously pulling levers that nobody had asked them to pull.4 min readMGF and PEG-MGF — the IGF-1 splice variant that turns on after exerciseTwo days after a particularly hard leg session — the kind where you went heavier than you planned and your form started to slide in the last few sets — the soreness is deep. Not the surface ache of muscles that worked hard, but the dense stiffness of tissue that was genuinely stressed. Your quads feel thick. Your hamstrings are tight in the belly of the muscle. This is not injury, exactly. It's the signature of damage that your body is in the process of repairing, and if the biology goes the way it should, you'll come back slightly stronger for it. The question exercise physiologists have spent decades trying to answer is: how does the muscle know to repair rather than just scar?8 min readWhat people are reporting about MK-677This article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.8 min readMK-677 in plain English — how oral GH secretagogues actually workYour stomach growls before lunch. You didn't think about being hungry, didn't decide to feel it — the signal arrived, unbidden, and suddenly food was the most important thing in the room. That signal has a name: ghrelin. And ghrelin does more than make you hungry. It is one of the primary switches that tells your brain to release growth hormone. MK-677 works because it found a way to press that switch without the rest of ghrelin's biology getting in the way.8 min readMK-677 vs injectable GH secretagogues — the decision treeThe syringe sits on the bathroom counter at 9 PM. You've done the research. You've talked to a prescribing provider. You're starting a GH secretagogue protocol and the question that was easy to avoid in the abstract is now concrete: do you inject this, or is there a reason to consider the oral option instead? The mechanism overlaps. The goal is similar. The biology diverges in ways that matter, and the practical trade-offs are real enough that the choice deserves more than a convenience calculation.8 min readThe MK-677 water retention conversationYou've been on MK-677 for three weeks and the scale is up four pounds. Your face looks slightly different in the morning — a little puffier, a little softer around the jaw. Your rings are harder to get off. Your ankles feel subtly heavy. You didn't change your diet. You're sleeping better, possibly. But the four pounds don't feel like muscle. They feel like something else.7 min readThe 'more GH = better' myth — why pulsatile vs sustained mattersThe logic feels airtight. GH declines with age. The things GH supports — lean mass, fast recovery, low body fat, good sleep, resilient skin — also decline with age. Therefore, more GH should produce more of the good things and slow the decline. The athlete who tells you GH changed everything and the longevity clinic that promises restored youthfulness are both operating from this logic. It's coherent. It's also wrong in the way that most oversimplifications of endocrine biology are wrong: not in the direction of the effect but in the assumption that more is better than the right amount in the right pattern.5 min readWhat people are reporting about GHRP-2, GHRP-6, and HexarelinThis article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.8 min readPicking your GH secretagogue — Sermorelin, Ipamorelin, CJC, MK-677, HexarelinYou've read enough to know that exogenous HGH isn't what you're looking for — too blunt, too much regulatory weight, too far outside physiological range for what you're trying to accomplish. You've landed in secretagogue territory, and now the confusion has moved one level deeper. Sermorelin. Ipamorelin. CJC-1295. MK-677. Hexarelin. People in serious clinical peptide practices and people on bodybuilding forums use these names interchangeably in ways that suggest they're all equivalent options, when in fact they operate through different mechanisms, have different half-lives, different side-effect profiles, and are appropriate for meaningfully different goals.10 min readWhat people are reporting about Sermorelin over monthsThis article summarizes experiences reported in public online communities including Reddit, longevity forums, and discussion boards. We are not advocating human use of any compound discussed here. Many of the peptides discussed are not FDA-approved for the uses described, and some are explicitly not approved for human or veterinary use. What follows is a synthesis of what people have reported, presented to give readers context on the public conversation — not as guidance, not as evidence of safety or efficacy, and not as a recommendation. Decisions about any compound should be made with a qualified prescribing provider after a full medical evaluation.8 min readTesamorelin vs Sermorelin — when GHRH analogs aren't interchangeableThey're both GHRH analogs. They both work by binding to the growth hormone-releasing hormone receptor on pituitary somatotroph cells and prompting GH secretion. That shared mechanism makes them sound like two versions of the same thing — one perhaps newer, one perhaps stronger — and the choice between them a matter of price or availability or personal preference. That framing misses what actually distinguishes them, which matters enough to get right before a prescribing provider writes anything down.7 min read