Latest / The Hunter Williams Podcast
The LL-37 Masterclass | A Research Guide (2026)
LL-37 is the peptide I think everyone should have on hand and almost nobody should be taking every day.
It's the only cathelicidin in the human body. That's an antimicrobial peptide your immune system makes to punch holes in bacteria, break up biofilms, and neutralize endotoxins. In this masterclass I walk through how it works. I cover why your vitamin D level decides whether your body can even make it. Then the specific situations where I reach for it. Stubborn sinus infections, bacterial acne, gut biofilms, suspected mold, and high-exposure travel windows.
I also cover who needs to stay…
The skinny
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