What does the term "human-grade" usually imply beyond merely being "fit for human consumption"?

Answer

Every single ingredient in the final product meets the same standards required for food intended for people.

"Human-grade" suggests a higher threshold where every component, including preservatives and minor ingredients, must meet the standards required for food intended for people.

What does the term "human-grade" usually imply beyond merely being "fit for human consumption"?
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