system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do some people think it's beneficial to "alkalize" the body?
gpt
A sufficiently charismatic snake-oil salesman convinced them of it.

Most people don't have much understanding of medicine, biology or science in general.  If some huckster starts tossing around fancy sounding words, it's easy to convince them that he's right - especially if it's loosely connected to some actual facts.