I have a coworker with IBS. Let’s name coworker ‘IBS’. Me and IBS are somewhat ‘friends’ to put it loosely. IBS randomly told me they have IBS one day over a year ago, have some short discussions about how they’re supposed to manage their condition (avoiding trigger foods). Fast forward a year, IBS is out sick routinely or works from home a lot / takes long breaks (likely in the shitter). 

Had a friendly chat today how they are and tells me they are feeling sick and reveals they are not managing their condition well at all, and continues to eat trigger foods. I gave somewhat harsh words about how they’re an adult now and should stop being stupid (not those exact words). I kind of want to let IBS’ manager know what’s up if this continues. This is pretty fucking stupid and IBS is a grown ass adult with an advanced degree. Would I be the asshole if I told IBS’ manager???