> there might be some mileage in using aluminium based deodorants for a starter, in order to reduce bacterial levels as a strategy to extend lifespans
Aluminum might reduce bacterial levels, but it isn't exactly great for human health either. Especially at high concentrations: https://pubmed.ncbi.nlm.nih.gov/9164811/
Feeding by drip aka intravenous feeding aka parenteral nutrition has never been a good idea in many ways, and besides aluminium, they also used to give manganese via drip as well! Manganese should only ever be taken orally, but we cant control what we inhale. Manganism and Parkinson's has so much in common, and it could explain baby's and toddler's uncoordinated movements.
Aluminum might reduce bacterial levels, but it isn't exactly great for human health either. Especially at high concentrations: https://pubmed.ncbi.nlm.nih.gov/9164811/