As soon as **any** augmentation of the organic body is embarked upon, it is an abomination of God’s plan and the augmented person is no longer human.
I wonder how vaccinations are considered. After all, it is an augmentation of the body against diseases. Is a vaccinated person still human? I have had vaccinations, but I thought I was human. My bad.
A promising nanotechnological line of medical research was to inject the body with cholesterol eliminating nanites – they would circulate (with the blood) throughout the body and attack build-ups of cholesterol. They will be dismayed to learn that they will no longer be human if they choose this path. They’ve probably had vaccinations anyway, so they are not human.