Genetics & DNA
13 articles with genetic insights and evidence-tiered analysis.
Ipamorelin Not Working? The GHSR Gene Variant That Explains Every Non-Responder Case
Ipamorelin is hitting your receptor and your GH spike is real. But the GHSR variant nobody tests for is silencing the 50% of your GH signal that runs between injections.
GHR Exon 3 Deletion: The Gene That Predicts Your Growth Peptide IGF-1 Response
Why does your IGF-1 barely move on ipamorelin while someone else's jumps 80 points on the same dose? The GHR Exon 3 deletion explains more of that gap than protocol ever does.
Why Two People on the Same Ipamorelin Protocol Get Completely Different IGF-1 Results
If your IGF-1 barely moved on ipamorelin, it is probably not the dose. Two genetic variables explain 43% of why growth peptide IGF-1 response varies up to 3-fold between users.
MTHFR Brain Fog Still There? Nootropic Peptides That Work Downstream of the Broken Enzyme
Methylfolate works for some MTHFR carriers. For the rest, elevated homocysteine keeps suppressing BDNF no matter how much B9 you take. Semax changes the equation entirely.
Semaglutide vs Tirzepatide: Which Actually Works Better Based on Your GLP-1 Receptor Gene?
Why does tirzepatide produce 20% weight loss while semaglutide delivers 5% for the same patient? Your GLP1R and GIPR genes predict the gap. 2026 data inside.
Akkermansia Gut Repair: Why Your Genetics Decide If It Works
Akkermansia triggers GLP-2, your gut's own repair hormone. Your FUT2 and MUC2 genes determine whether the bacterium can colonize at all. Here is what the research shows.
Do Peptides Work After 50? How Your Aging Genes Change the Math
Do peptides work after 50? Yes, but the rules change. Your FOXO3, KLOTHO, and APOE variants decide which peptides hit hardest and which ones you waste money on.
TNF-Alpha Inflammation Genotype: Why Some People Never Fully Heal
Why do healing peptides work dramatically for some people and almost nothing for others? Your TNF-alpha, IL-6, and IL-10 genotype may be the actual answer.
APOE4 Carrier? 7 Neuroprotective Peptides Ranked by Evidence
APOE4 triples your Alzheimer's risk and suppresses BDNF by 30 percent. But it makes you a better responder to Cerebrolysin. Seven peptides ranked by APOE4 failure mode.
CYP3A4 Slow Metabolizer Guide: What Peptide Users Must Know
If you carry the CYP3A4*22 variant, standard drug doses can build to 150-170% of intended levels. Here is what that means for your peptide stack.
Semaglutide Non-Responders: The Gene Behind the Gap
A 27,885-person study found the gene that predicts who loses weight fast on semaglutide and who barely moves. Your DNA already has the answer.
What Your 23andMe Data Can Actually Tell You About Peptides
Your 23andMe raw file is a survey of 650,000 known variants. Here is which peptide-response SNPs it reliably genotypes, what gaps exist across chip versions, and why the data is more useful than most realize.
Semaglutide and Your Genetics: Why Ozempic Works Differently for Everyone
10-17% of semaglutide users are non-responders. New genetic research — including a 27,885-person GWAS from 23andMe — reveals why. Your GLP1R, TCF7L2, and ARRB1 variants determine whether you'll lose 15% of your body weight or barely notice a difference.