Here's something related in a recent reply to Richard Dawkins. Torah as originally presented thousands of years ago is the only moral system that really forbids it without ambiguities, metaphors or other excuses.
Would you eat HUMAN MEAT? Fears raised over lab-grown flesh Daily Star
By Rachel O'Donoghue / Published 14th March 2018
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Another commented: 'Personally, I wouldn’t consider eating the material that humans are made from as cannibalism although I suppose most people would. Whatever the DNA, to cease the annual suffering of billions of animals should be a primary goal.'"