Only "Junk Food" is a stereotype, just as "healthy food" is a stereotype, and you have used both here, showing the usefulness of stereotypes.
If only people would stop putting bad labels and connotations on very useful words that are used every day, just because some bad people use them for bad purpose. "Race" is a perfectly acceptable word, and WotC continues using it, and by the way, in much more of the proper sense (although not yet completely) as it's commonly used, since there are no human races.