evidence: You will no doubt have heard that there’s aluminum in vaccines. Aluminum is used as an adjuvant, which means its presence boosts the immune response when you are vaccinated. [...] The point is adjuvants serve an important and critical purpose in vaccines. But is the use of aluminum safe? In fact, aluminum is one of the most common elements in the Earth’s crust and is present in almost all our food. We are all eating aluminum every day. Infants are exposed to more aluminum in breast milk or formula than they are from vaccines, but either way these are tiny doses that don’t have any major health effect. You might have heard about a U.S. Food and Drug Administration imposed limit of 25 micrograms per day on aluminum. It’s worth noting that this number has to do with total parenteral nutrition (TPN) or feeding through an intravenous. We regularly consume much more aluminum than this in food or breast milk, and vaccines are not IVs. They are injections under the skin, not into the bloodstream. After several decades of use and study, there is no good reason to believe that the small doses of aluminum used in vaccines are dangerous.