As for fluoride, for a long time I wondered if it might calcify arteries like it calcifies teeth. I'm not concerned about that anymore based on a lot of things:

1. They have found the molecular mechanisms that transport apoB under the endothelial layer (and back). The atheroma formation mechanism is now known, and fluoride and sugar-damage simply aren't part of it,

2. Calcifying an existing atheroma is a good thing. Soft ones may rupture and cause an event, whereas hardened ones are much safer. Over time the vessel widens and/or new capillaries are formed that bypass the narrowing.

But I'd still use a carbon filter because of the other stuff, and for taste as nostr:npub1amtt4ht2vwuxc4lydp6tkd0w6a2kzstmnxltwpzwc20c2pgp7uzq2gc0mj mentions nostr:nevent1qqspx4vau0zmggqzuzfxa0jr6rdy7w8swk72eh5lq8526gudxfny7hgprdmhxue69uhkwmr9v9ek7mnpw3hhytnyv4mz7un9d3shjqghwaehxw309akxztnjv4kxz7tpvfkx2tn0wfnj7qg4waehxw309ahx7um5wghx77r5wghxgetk9u783p29