So what is an/the alternative ... besides water?
Do you really want to know?
Calcium-enriched juices, tea and coffee, and soy milk.
Beer.
Having said that, I drink whole milk only, pure butter (salted) and use bacon fat in a lot of my cooking, same as both of my granpas and my father, who all lived well into their late 80's, one GP until 96. That's long enough for me on this globe, for I know it is but a passing through on a journey to somewhere far better, and I'll enjoy my life here eating and drinking what pleases me.
These cradle to grave people can kiss my ass.
FMCDH(BITS)