Does it make sense to make lactase if there is no lactose present?

However, because lactose-free milk contains added lactase, it's easier to tolerate for those with lactose intolerance, making it a good alternative to regular milk. Lactose-free milk is easier to digest for people with lactose intolerance because it contains lactase, the enzyme used to break down lactose.

Explanation:

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https://www.pas.rochester.edu/~blackman/ast104/copernican9.html

Explanation:

go to this website it will tell you