Dr Ben Lynch
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Reading Dirty Genes will launch your understanding of how your genes are impacting your daily life.
Peptides are not for everyone.
If you have active cancer, a history of cancer, or an autoimmune condition, this matters more than any gray-market warning label will ever tell you.
Most of the popular peptides work by signaling growth and repair. BPC-157 drives angiogenesis — new blood vessel formation. Growth hormone secretagogues push IGF-1 up. That's exactly what you want when you're healing a tendon. It's the opposite of what you want when there are cells in your body you don't want fed.
Autoimmune is its own problem. Several peptides modulate the immune system directly. When your immune system is already attacking your own tissue, deliberately nudging it is a gamble most people are never told they're taking.
This isn't fear-mongering. It's the conversation that should happen before the first injection, not after.
A tool that heals one person can accelerate the exact thing another person needs to stop.
The peptide you’re injecting could be contaminated. Your purity certificate won’t tell you.
Endotoxins are bacterial byproducts. They survive sterilization. You can sterilize a vial completely and the endotoxins are still in there.
And they’re not harmless. Endotoxins trigger fever. Inflammation. In serious cases, full systemic immune activation. You think you’re reacting to the peptide. You’re reacting to what’s contaminating it.
Standard purity testing doesn’t catch this. It doesn’t catch heavy metals either. Or microbial contamination.
So a vendor can hand you a “99% pure” certificate that says nothing about the three things most likely to hurt you.
There’s a specific list of tests you need to see before you trust any peptide source. Most people have never heard of them.
Comment PEPTIDE and I’ll send you the full video I just released with everything you should watch for if peptides are something you’re considering.
06/08/2026
BPC 157 heals your injury by growing new blood vessels.
Cancer grows the exact same way.
It's called angiogenesis, your body building fresh blood vessels to feed tissue. When you're healing a tendon, that's useful. It's why this peptide works.
But that signal can't tell the difference between healthy tissue and a tumor. A 2017 study confirmed BPC 157 switches on VEGFR2 — the same receptor cancers use to build their own blood supply. It's a pathway involved in roughly half of all human cancers.
To be clear: turning this on in a healthy body is not the same as causing cancer. Your body uses angiogenesis every day.
The real risk is if you're carrying a tumor you don't know about yet, and quietly feeding it.
And if MTHFR or COMT is slowing your methylation, you've got even less buffer.
I just released a full video where I break down all four ways these compounds rewrite gene expression, who should never touch them, and what to demand before you inject anything. Comment PEPTIDES and I'll send you the link.
When you're stressed, your body releases CRH and it activates mast cells within seconds.
Those mast cells release histamine. And histamine disrupts your sleep.
Less sleep means more mast cells. More mast cells means even less sleep.
The cycle doesn't break with another pill. It breaks when you calm the system down first.
Comment the word ALLERGY and I'll send you what actually breaks the cycle.
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