Went to the cupboard
To get her doggie a bone,
When she got there
The cupboard was bare...
...that's because a 21st century diet expert had paid Mother Hubbard (who lived 100 years prior) a visit and tossed all the *unhealthy* stuff out of her pantry cupboard:
Seriously: If you went by what the modern diet experts said, very little would be left in the pantries from yester-year. The list of *healthy* stuff is shrinking fast.
(It's a pity the starving people in Ethiopia didn't have access to Old Mother Hubbard's Cupboard. The dieticians there would have a different mantra, I'm sure. Something like "It's all good")