doge57 t1_ja3p28t wrote
Reply to comment by Gullible-Flounder-79 in ELI5: if you’re lactose intolerant, why does the lactose cause bowel distress instead of passing through inertly? by chemstu69
Even without the bacteria, lactose is osmotically active so it limits water absorption by your intestines which causes diarrhea just like sorbitol
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