Olive Leaf Extract: More Than Blood Pressure & Antioxidants

I tested its impact on male hormones, metabolism, and performance.

Most people think of olive oil as the healthy part of the Mediterranean diet. But almost no one talks about the leaves — and that’s where things get interesting.

Over the past 2 weeks, I’ve been running an experiment with olive leaf extract (320mg oleuropein per day), pushing it beyond the usual “blood pressure and immune health” claims. I tracked it with bloodwork, logged how I felt, and went deep into the research.

The results surprised me. There’s much more happening here than what’s written on a supplement label.

In this article, I’ll show you exactly what I found — from the science, to my own labs, to how it actually felt when I put it to the test.

Here’s what I’ll be discussing:

• Testosterone & Androgen Support
  How olive leaf extract (OLE) stimulates LH and testosterone via adrenergic pathways.

• Estrogen & Aromatase Control
  Natural aromatase inhibition and how OLE balances the T:E2 ratio.

• Cortisol, Stress & Mood Resilience
  The dual effect of OLE on cortisol and its role in stress recovery.

• Thyroid & Metabolism
  Boosting T3 through adrenergic activation and DIO2 upregulation.

• Weight Loss & Fat Distribution
  UCP1, PPARα, and how OLE reduces fat pads and improves lipid metabolism.

• Blood Flow & Erections
  Vasorelaxation, nitric oxide, and endothelial support for better circulation.

• Gut Health & Endotoxin Blockade
  How OLE protects the gut barrier, blocks LPS, and supports microbiome balance.

• My experience with lab work
  I put all the in vitro and animal science to the test to see if it really works the same in humans (or just me for that sake).

• Practical Guide to Using OLE
  Best forms, doses, timing, and synergistic stacks.

• DIY Shortcut: Making Aglycone at Home
  Step-by-step method to boost absorption with the enzyme shortcut.

• Caveats & Nuance
  Hormonal paradoxes, dose-dependent effects, and why context matters.