We teach, and were taught, that floating poop means one of two things:
- gas in the stool
- fat in the stool
Now, gas in the stool may reflect the presence of healthy, but gas-promoting foods like certain vegetables and beans. In this way, it may be a good thing. Conversely, stool that’s dense (and sinks) may indicate that it sat around a long time in the colon (where the moisture in it was reabsorbed into the body). That’s likely a bad thing because the longer it sits in your colon, the longer your colon’s been exposed to nasty chemicals that were meant for excretion.
Fat in the stool is bad news. One other way to tell if there’s fat in the stool is to ask: Do people refuse to use the toilet after you’ve been there (unless they wearing a gas mask)? The smell of undisgested fat is quite overpowering.