Vaccine Injury and Abnormal Blood Vessels in the Brain
- Becca Joyce
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- Apr 30
- 4 min read
Author: Becca Joyce
July 8th 2025
Preface: Some of the things that I have talked about in this writing, I have never heard anyone talk about. Today God showed me some of the intricacies of the injury and why it is happening.
It’s not just the mRNA vaccines that can cause abnormal blood vessels in the brain.
Multiple types of vaccines—including traditional childhood vaccines—contain ingredients that disrupt neurological and vascular development.
Traditional (Non-mRNA) Vaccines Can Also Cause This — Here's How:
1. Aluminum Adjuvants (Common in DTaP, Hep B, HPV, etc.)
Role: Boost immune response.
What it does: Aluminum doesn’t stay put; immune cells carry it into the bloodstream and brain, especially in infants.
Brain impact:
Triggers neuroinflammation
Disrupts vascular integrity
Alters the blood-brain barrier
Interferes with vessel growth (angiogenesis)
SIDS
Anaphylaxis
Study: Gherardi et al., 2015 — Aluminum travels to the brain causing chronic inflammation.
2. Polysorbate 80 (In DTaP, HPV, flu shots, etc.)
Role: Vaccine emulsifier.
Problem: Opens the blood-brain barrier, especially in infants.
Result: Allows harmful substances—aluminum, viral fragments, preservatives—to enter the brain and damage vessels.
3. Formaldehyde / Formalin
(Inactivated viruses in vaccines like IPV, Hep A)
Neurotoxin causing oxidative stress and vascular inflammation. The developing brain is highly vulnerable.
4. Thimerosal (Mercury-based, still in multi-dose flu shots)
Toxic to blood vessels and neurons, linked to vasculitis, mitochondrial damage, and microglial activation impacting vessel formation and repair.
What Happens in the Brain?
These ingredients, once in circulation and crossing an immature blood-brain barrier, cause:
Brain vessel inflammation
Fragile/leaky vessels
Microclots or blockages
Disrupted oxygen delivery
Anaphylaxis
SIDS
Abnormal angiogenesis (erratic new vessel growth leading to potential long-term damage)
Bottom Line
It’s not just the delivery method (mRNA vs traditional). The bioactive, neurotoxic, and vascular-disrupting ingredients in many vaccines pose real risks, especially during critical neurological development.
This isn’t “anti-science.” It’s basic physiology and immunology that’s been censored.
You’re not crazy or overreacting. You’re seeing what most won’t name:
Vaccines—of multiple types—can cause abnormal blood vessel development in the brain.
What about Tylenol?
Doctors often recommend it for fever or pain after vaccination.
But ask: What is causing the baby or toddler to cry?
How Tylenol Interacts with Vaccines: Blood-Brain Barrier & Liver Detox
Tylenol depletes glutathione, the body’s master detox molecule critical for neutralizing toxins in liver and brain.
Vaccines contain ingredients (like polysorbate 80, PEG) designed to cross natural barriers like the blood-brain barrier (BBB).
Post-vaccine inflammation increases BBB permeability.
Tylenol lowers glutathione, impairing liver detox and weakening brain defenses, allowing vaccine toxins easier brain access.
The liver works overtime detoxing vaccine components. Tylenol adds oxidative stress, making detox harder.
Children with genetic variations (MTHFR, GST polymorphisms) are especially vulnerable.
In Summary:
Tylenol doesn’t push vaccine ingredients across the BBB by itself.
It depletes glutathione, weakens detox and antioxidant defenses.
This makes the brain vulnerable to toxins already in the system.
Giving Tylenol immediately after vaccination or anytime the vaccine is still active worsens damage cumulatively.
It’s Not Just Tylenol:
Other sedatives like Benadryl or melatonin can:
Suppress the central nervous system
Interfere with methylation/detox pathways
Slow recovery
Disrupt neurological balance in already affected brains
Every dose risks reactivating inflammation, disrupting development, or weakening defenses.
This Isn’t Fear. It’s Awareness.
Every medication given after vaccination adds to a foundation already cracked by toxic exposure.
Damage accumulates slowly: regression, sensitivities, gut issues, mood shifts, chronic infections, sleep problems, delays.
These symptoms build step-by-step from the choices we were told were “safe.”
To Top This Off:
When a baby starts teething, the inflammation and discomfort can actually increase the permeability of the blood-brain barrier (BBB). This means the normally tight barrier that protects the brain becomes more "leaky."
Now, if a baby is given Tylenol or Benadryl during this vulnerable time, it can:
Deplete glutathione (Tylenol’s effect), weakening the brain and liver’s ability to detoxify.
Suppress the nervous system (Benadryl’s effect), potentially interfering with the body’s natural regulation and detox processes.
Combined with a more permeable BBB during teething, this creates a dangerous window where harmful substances (from vaccines, environmental toxins, or even natural inflammatory responses) can more easily reach the brain.
This increased vulnerability is one reason why SIDS (Sudden Infant Death Syndrome) rates are linked to periods of teething, illness, or other stressors — times when the BBB is compromised and infants might be receiving medications that reduce their natural defenses.
It’s a perfect storm of biological factors converging:
BBB opening due to teething inflammation
Medications that impair detox or nervous system function
Possibly residual vaccine or toxin load in the system
All of these increase risk.
Here’s a simple summary covering up to 2-3 years old:
Babies usually start teething around 4 to 7 months.
The first teeth to come in are the bottom front teeth.
By 1 year old, most babies have about 6 to 8 teeth.
Between 1 and 2 years old, more teeth come in — usually the top front teeth and some molars.
By 2 to 3 years old, most toddlers have all 20 of their baby teeth.
The teeth coming in correlate to the systematic patterns of vaccine injury.
——
When Does the Vascular System Stop Developing?
Immediately After Birth: Major circulatory changes redirect blood flow; lungs begin oxygenating blood.
First Year: Blood vessels mature, endothelial cells develop, blood pressure rises.
Childhood to Adolescence: Vessel growth and remodeling respond to growth and hormones; capillary networks densify.
Adulthood: Vascular system adapts lifelong, influenced by lifestyle and health.
Critical development continues through infancy and childhood, with structural maturation through adolescence.
——
Here are direct links to reputable sources that address each of the concerns raised:
Aluminum Adjuvants
CDC: “Aluminum salts . . . used safely in vaccines for more than 70 years”
Children’s Hospital of Philadelphia: Comparison of aluminum exposure via vaccines and diet
FactCheck.org / SciCheck: Debunking concerns about aluminum in vaccines
Polysorbate 80
Immunize Kansas Coalition: Polysorbate 80 and the blood–brain barrier—thorough safety review
PMC article: High-dose polysorbate 80 and BBB permeability in animal models
Formaldehyde
FDA overview: Common vaccine ingredients, including residual formaldehyde (safe levels)
Thimerosal (ethyl‑mercury)
CDC: Details on thimerosal’s use and removal from routine vaccines
FactCheck.org: Clarifying differences between ethyl-mercury (in vaccines) vs. methyl-mercury (toxic)
— Becca Joyce
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