“Did you hear about the haunted health food store? Everything is super-natural”

A Halloween riddle about health food was posted on the newsgroup alt.humor on October 15, 1998:
 
Q: Why do ghosts eat only the finest quality health food?
A: Because it’s super-natural.
 
A health food store version of the joke was posted on Reddit—Jokes on October 6, 2017:
 
“Did you hear about the haunted health food store? Everything is super-natural.”
             
 
Google Groups: alt.humor
Halloween Humor - 13
Craig Bennett
10/15/98
Why do ghosts eat only the finest quality health food?
Because its super-natural !
 
20 October 2004, The Monitor (McAllen, TX), “Favorite Halloween Jokes & Riddles,” pg. 8D, col. 3:
Why do ghosts like health food? Because it’s supernatural.
Bianca, 3rd grade, Thigpen Elementary
   
Google Books
ROFL: Rolling On the Floor Laughing Joke Book
New York, NY: Tangerine Press
2005
Pg. 196:
Why do ghosts like health food?
Because it’s super natural.
 
19 June 2007, Liverpool (UK) Echo, “Time Off: Your Jokes,” pg. 23:
Why do ghosts like health food?
Because it’s super natural.
 
Twitter
confused‏
@Hashtag_yosweg
Why do ghosts like health food? Because its super-natural!
6:51 PM - 4 Jul 2012
     
Twitter
Diana K. Carney‏
@DianaKCarney
Why do ghosts eat only the finest quality health food?
Because it’s supernatural!
2:25 PM - 20 Sep 2012
 
Twitter
Bonkerz Comedy Club‏
@BonkerzComedy
Corny Halloween Jokes!
Q - Why do ghosts eat only the finest quality health food?
A - Because its super-natural !
9:00 AM - 31 Oct 2012
       
Google Books
Super Hot Jokes For Cool Kids!
London, UK: Buster Books
2014
Pg. ?:
Why do ghosts eat only health food?
Because it’s supernatural.
 
Google Books
A Prairie Home Companion
Pretty Good Joke Book (6th Edition)
Introduced by Garrison Keillor
Prince Frederick, MD: HighBridge, a division of Recorded Books
2015
Pg. ?:
Why do ghosts like health food?
Because it’s super natural.
 
Twitter
SCCHS_Comp‏
@SCCHS_Comp
From Bolt’s Stable: Why do ghosts like health food? Because it’s super natural.
11:02 AM - 10 Mar 2015
 
Reddit—Jokes
Did you hear about the haunted health food store?
submitted October 6, 2017 by joshlamm
Everything is super-natural.
 
Twitter
katie‏
@stellerstyles
@signofstylesss Did you hear about the haunted health food store? Everything is super-natural
7:22 PM - 6 Oct 2017