Research
'Immune peptides' are sold everywhere, but only one has real human trials: thymosin alpha-1. Here is what actually has evidence for supporting the immune system - and what is just marketing.
When people ask about peptides for gut healing, they almost always mean BPC-157. The animal evidence for gut repair is genuinely strong and consistent - the human evidence is still limited. Here is the honest picture.
Semax and Selank are the 'nootropic peptides' sold for focus, memory, and calm. They have real clinical use - in Russia. The Western evidence is thin and mostly unreplicated. Here is the honest picture.
'Anti-aging peptides' are marketed hard, but the evidence is uneven. Collagen has the best (still modest) human data; most growth-hormone and 'longevity' peptides are weaker than the ads suggest. Here is each one, graded.
Peptides and anabolic steroids are lumped together in gym talk, but they are different types of molecule with different legal status. Peptides are amino-acid chains; anabolic steroids are controlled substances. Here is the clear difference.
AOD-9604 is sold as a fat-loss peptide - a fragment of growth hormone. It works in mice, but its one large human trial failed to beat placebo and was never published. Here is the honest evidence.
Growth-hormone peptides are sold almost entirely on muscle claims. No controlled trial has measured muscle with them. The one peptide with positive lean-mass data is the one nobody markets for it.
Appetite changes in weeks, weight declines for over a year before plateauing, and cardiovascular benefit separates over months. Here is when each GLP-1 benefit appeared in the trials that measured it.
Whether a peptide is worth it depends on four things: what benefit is proven, in whom, for how long, and whether the effect lasts after you stop. Here is that framework applied to every peptide we cover.
Two peptides produce large, well-documented weight loss in randomised trials. Several others are marketed for fat loss with no outcome data at all. Here are the numbers, the timeframes, and what happens when you stop.
