Many vaccines contain aluminium compounds, such as aluminium sulphate or aluminium hydroxide. These ensure that our immune system responds better to the vaccine, increasing its effectiveness. The presence of aluminium is sometimes criticized, especially in childhood vaccines. It is claimed that it causes developmental disorders, allergies, and autoimmune diseases.
A recent study by Danish researchers shows this to be false. The researchers analysed data from more than 1.2 million children, of whom only about 15,000 were unvaccinated. The vast majority of children received vaccines containing aluminium. The conclusions are clear: the vaccinated group exhibits no more health problems than the unvaccinated.

US Secretary of Health and Human Services Robert Kennedy Jr., a notorious opponent of vaccination, attempted to prevent the publication of this study from the journal Annals of Internal Medicine—a highly unusual step. But publication took place anyway.
The results of this study confirm what has long been known. Aluminium is a metal found everywhere in nature. We ingest an average of 5 milligrams of aluminium per day through food, drinks, breathing, as well as through food packaging, pots, and pans. This amount is completely harmless. A single vaccine dose contains even less aluminium, 0.1 to 0.5 milligrams.