The question was last asked in 2013, and I wondered if there is any more definitive research on this. The german ministry of risks says that there is a possible risk of using them: https://www.bfr.bund.de/cm/343/aluminiumhaltige-antitranspirantien-tragen-zur-aufnahme-von-aluminium-bei.pdf
However, this is from 2014 and says that there is little definitive data. Are there any new updates?