Per Wikipedia:  “An adjuvant is a pharmacological or immunological agent that modifies the effect of other agents. Adjuvants may be added to a vaccine to boost the immune response to produce more antibodies and longer-lasting immunity, thus minimizing the dose of antigen needed. Adjuvants may also be used to enhance the efficacy of a vaccine by helping to modify the immune response to particular types of immune system cells: for example, by activating T cells instead of antibody-secreting B cells depending on the purpose of the vaccine. Adjuvants are also used in the production of antibodies from immunized animals. There are different classes of adjuvants that can push immune response in different directions, but the most commonly used adjuvants include aluminum hydroxide and paraffin oil.”

To make this easier to understand, imagine your body to be a city, your immune system to be the police, and antigens (parts of foreign invaders that can be identified by the immune system) to be cars containing criminals.  Vaccines contain small amounts of antigens, so in this metaphor, it would be like a single taxi driving through New York City.  The odds of the police noticing the criminal in the back of that taxi are extremely low.  Adjuvants serve as giant neon billboards attached to the top of that taxi that not only announce the presence of the criminal, but also have choice things to say about the police officers’ mothers.  Instead of slipping anonymously through traffic, every police officer in the area will focus on taking down that sign and arresting the criminal.

Adjuvants are chemicals that directly irritate and mobilize the immune system to (hopefully) generate an immune response to the antigen from the vaccine.  The problem with this strategy is an increasing body of scientific studies that demonstrate that other targets often get caused in the crossfire, causing autoimmune (the immune system attacking the host’s body) and sensitivity conditions that all-too-often are chronic.

Returning back to our earlier metaphor, imagine that those angry police officers surround the taxi cab, pull out shotguns, and start indiscriminately firing into the street.  After the bloodbath ends, not only is the criminal in the taxi cab scooped up and processed, but every bystander is similarly processed.  A slug-riddled mailbox gets taken into evidence.  Perhaps a dog-walker with a pack of poodles succumbed to the hail of bullets and the police now associate poodles with criminals as well.  You might think to yourself that these are some stupid police officers, but they were just doing their job, and that criminal made them angry.  The components of our immune system aren’t all officer-of-the-year material:  if any part of it makes a mistake, the error gets propagated across the entire “police department”.

Does that make sense?  If so, I encourage you to educate yourself on the actual mechanisms of immune function.  While many resources are available online, an easy primer can be found at Wikipedia.

Currently, the CDC‘s position is that aluminum adjuvants are safe.  On many pro-vaccination sites, the amount of aluminum found in vaccines is often compared to benign sources of aluminum such as breast milk or tea.  This is deliberately deceptive:  as anyone trained in medicine is aware, the route of a drug, supplement, or chemical can have dramatically different effects in the body.  For example, consuming 40 IU of potassium chloride would have almost no effect on the body’s serum potassium level, whereas rapidly infusing 40 IU of potassium chloride intravenously can have such a severe effect on serum levels that it can instantly stop your heart.  So, comparing one form of natural aluminum in tea that is absorbed at extremely small levels in the gut is obviously different than an artificial form of aluminum designed to send the immune system into DEFCON 1 and is 100% absorbed into the bloodstream.  Here is a visual aid to help put this into perspective:

There is no comparison, and anyone medically trained that attempts to make one is knowingly lying to you.  This may seem harsh, but there is only one interpretation for their actions:  they know what they’re stating to be false due to their training and education, so the only remaining question becomes why they are choosing to deceive?

CDC – “Aluminum salts, such as aluminum hydroxide, aluminum phosphate, and aluminum potassium sulfate have been used safely in vaccines for more than 70 years.”

Is this true?  What does the science say?

Scientific Studies

“The application of Hill’s criteria to these data indicates that the correlation between [aluminum] in vaccines and [autism spectrum disorder] may be causal.”

There are literally hundreds of studies on the subject, with dozens more being released each year.  The evidence is clear:  aluminum adjuvants are neurotoxic, cause autoimmune conditions, and at best impair normal brain development.