You could have more frequent diarrhea
“When we eat foods with fat, our liver releases bile into the digestive system to help break it down. Following a high fat diet like keto means that the liver needs to release extra bile—and bile is natural laxative, so too much can loosen stool and speed up how fast it moves through your system, leading to diarrhea,” says Iu.
You may have “keto breath”
When your body goes into ketosis, it will start to produce by-products called ketones. This includes acetone—yes, the same chemical found in nail polish remover, which your body actually naturally makes on its own, according to a 2015 review of research. “One of the ways ketones are released from the body is through exhaling, and breath usually has a distinct odor that’s different from the common bad breath experienced when there’s a build up of bacteria in the mouth,” says Iu.