A health nut is a person who is obsessed about his/her health.
"Health nuts are going to feel stupid someday, lying in hospitals dying of nothing." Redd Foxx
1) One who spends the majority of their weekly salary on expensive, media promoted, cardboard (liquid or solid state) that tastes like shit. 2) He who LOVES veggie dogs
Azns who drink Acai at 14 dollars a week rather than buying noodles or smelly phish. Clearly a health nut.