Seattle, United States - we drink without boiling although a water district in the area has semi-annual boil water orders for e. Coli and stuff. I've lived in water districts where the tap water tastes funny and lots of people put it through a cheap filter, but I've never minded the flavor.
Basically, the default here is that you don't need to boil or filter your water.... But sometimes contamination happens and then everyone freaks out for a week or so.
Pretty sure Johnny was canonically 19 - it's still cringey if it were real life but WAY less weird.
It's also a pretty powerful laxative, so this would be a bad idea
I really wanted to run or include a hangry barbarian - basically with every few hours without eating their attacks get stronger but their wisdom & charisma take a hit. At a certain point they'd involuntarily rage. The mechanics were too fiddly to do it with any structure but I still want to use it as an element with an NPC someday.
Oh it goes deeper than this -
Baby's are made of materials floating around in their gestational parent's blood. And guess what breastmilk is made of..... It's made of blood. Your body literally takes your blood and turns it into milk.
So until they start eating food, a breastfed baby is made entirely of their mother's blood plus a single sperm.