Endometriosis

Retrograde menstruation is universal. Peritoneal macrophage efferocytosis failure is what separates women who develop endometriosis from those who don't.

The Efferocytosis Failure Model

Retrograde menstruation (endometrial cells deposited in the peritoneal cavity during menstruation) occurs in most women. Normally, peritoneal macrophages clear this tissue efficiently through efferocytosis within days.

In endometriosis, peritoneal macrophage efferocytosis is specifically impaired by:

• OxLDL and OXLAMs from dietary oxidized fat exposure → MERTK/AXL downregulation
• Lipid-laden foam cell macrophages in the peritoneal cavity → reduced phagocytic capacity

The deposited endometrial cells survive, implant, and establish lesions. The same macrophages that fail to clear them simultaneously produce:

• VEGF → pathological angiogenesis sustaining the ectopic tissue
• TNF-α, IL-6, IL-8 → recruit more dysfunctional macrophages

Local Aromatase Autocrine Loop

Ectopic endometrial tissue develops local aromatase activity independent of systemic estrogen:

• Produces its own estradiol
• Drives its own growth through ER→cAMP→aromatase positive feedback
• Simultaneously loses progesterone receptor expression → progesterone resistance → loss of the normal anti-proliferative signal

The Iron Problem

Menstrual blood deposits iron in the peritoneal cavity:

• Free iron → Fenton chemistry: Fe²⁺ + H₂O₂ → OH• + OH⁻ + Fe³⁺
• Hydroxyl radical generation → pro-oxidant peritoneal environment
• Further impairs peritoneal macrophage efferocytosis capacity
• Creates local oxidative stress driving VEGF and inflammatory cytokine production

Protocol-Specific Additions

Lactoferrin (100–300mg daily):

• Iron-binding glycoprotein specifically chelates free peritoneal iron
• Reduces Fenton chemistry in the peritoneal cavity
• Directly promotes peritoneal macrophage efferocytosis through TLR4-independent mechanisms
• Reduces local VEGF production (the angiogenesis sustaining lesions)

Anti-angiogenic framing of the botanical pack: The hawthorn/dan shen/pine bark OPC additions are framed elsewhere as therapeutic angiogenesis for connective tissue repair. For endometriosis, the same compounds normalize rather than simply promote angiogenesis — they suppress the pathological VEGF-driven vessel formation in lesions while maintaining normal vessel function in healthy tissue.

DIM (from red cabbage fermentation): Shifts estrogen metabolism toward 2-ME2 (2-methoxyestradiol) — specifically anti-angiogenic and anti-proliferative. 2-ME2 inhibits HIF-1α in endometrial cells, reducing the hypoxic signaling that drives lesion angiogenesis and growth.

Connections

• [[Efferocytosis Failure]] — the initiating failure
• [[Estrobolome]] — systemic estrogen dominance context
• [[Phase 2 - Mast Cell Stabilization]] — peritoneal mast cells are also activated
• [[Rheumatoid Arthritis]] — shared efferocytosis mechanism
• [[EDS-MCAS-Eczema Cluster]] — shared upstream drivers