Submitted by nateblackmt t3_11a9tvk in askscience
inventordude01 t1_j9u7rhd wrote
Reply to comment by berliniam in Why is urine yellow? by nateblackmt
Dude, your knowledge is profound! I was just on a diet and my stools were concrete grey. (They are normal now that I'm off it, but I would really like an explanation of this.)
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