In my second year of a three year PhD program and I now hate research. What career can I do?
Contrary to how the world looks from inside of a Ph.D. program, most teachers aren't professors and most professors aren't focused on research.

The professors who educate Ph.D. students are mostly at research-centric institutions, but there's a lot more undergraduates in the world than graduate students, and most higher education institutions are not research-centric.  There are lots of good undergraduate-only institutions out there, which expect their faculty to do at least some research in order to get tenure, but it's far from their primary duty.  Many other higher education institutions are community colleges or other institutions that don't primarily cater to full-time just-out-of-high-school students, and they are even less likely to want research (or give tenure).

Next, don't forget that people spend a lot of time getting educated before they go to college.  There's probably a lot of places to put health education to work both for teenagers and for younger kids in school systems.

Finally, there is also a large and complex educational ecosystem that exists entirely outside of traditional education institutions: companies educate their staff, government agencies, community groups, non-profits, etc. all have populations that they want to serve in various ways.

In short: you've got lots of opportunities, even of none of them is likely to make you rich.