Is Aluminum in Vaccines As Safe As We've Been Told? A Deeper Dive

For decades, vaccine safety conversations have circled around ingredients like thimerosal and formaldehyde. But as I wrote in Between a Shot and a Hard Place, one ingredient that continues to raise valid questions—especially among parents and researchers —is aluminum.

Aluminum is used as an adjuvant to help vaccines generate a stronger immune response. While public health agencies assert that the amounts used in vaccines are safe, much of the foundational research is outdated, conducted in adults, and doesn’t reflect real-world exposures in infants—especially in the context of a growing chronic disease epidemic.

In this subscriber-only article, I expand on the aluminum section of my book and walk through the data, the biological plausibility of risk, and the questions that still haven’t been answered.

In this deep dive, you’ll learn:

• How aluminum exposure from food and the environment compares to aluminum from vaccines

• Which childhood vaccines currently contain aluminum

• Theoretical mechanisms by which injected aluminum could impact the developing brain and immune system

• What the research says—and doesn’t say—about safety, clearance, and cumulative exposure

• Historical parallels with other metals like lead and mercury that were once “deemed safe”

• The specific research gaps that still need to be addressed

• Where we go from here, and what true scientific transparency should look like

If you're ready to explore this topic with nuance, science, and integrity—not fear or denial—subscribe to unlock the full article.