Doctors and nurses share the common sense things their patients didn't know.

Becoming a healthcare worker is not for the faint of heart.

A Reddit user asked the doctors, nurses and health aides of the world to answer the question, "What is something you never thought you would have to tell a grown a** human?"

From body horrors to simple failure to follow instructions, the answers are pretty shocking.

Some patients struggle with basic hygiene:

Brush your f*cking teeth twice a day people. - CrippledJockey

Others just need a good sex ed course:

A couple instances come to mind.

Don’t have sex 6 hours after you delivered a baby.

Coffee creamer is not the same as infant formula. Please do not feed your day old newborn International Delight.

Probiotics are different from antibiotics. Probiotics do not cure syphilis.

Edit: These were 3 different patients. I’m not sure if that’s better or worse? - Kaclassen

Or an AA meeting:

I worked in Hospital Administration for nearly two years. While working on something I decided to take a break and go down to the cafeteria to get something to eat and not look at number.

While there, a woman was on the phone with someone and was pretty openly talking about how she kept drinking the night before surgeries to calm her nerves and how she thought it was ridiculous that the doctors couldn’t/ wouldn’t just pump her stomach so they could get the surgery started. - TypicalVegetarian