Here's a scientifically true fact that some might find gross:
The human body is home to various types of microscopic organisms, including bacteria and fungi, which make up what is known as the human microbiota. In fact, there are more bacterial cells in your body than human cells. While most of these microorganisms are harmless or even beneficial, some can be unpleasant to think about.
For example, one study estimated that the average human has around one to two kilograms of bacteria living in their intestines. These bacteria aid in digestion and other bodily functions, but they can also produce unpleasant byproducts, such as flatulence (gas) and foul-smelling stools.
Furthermore, the human body naturally sheds dead skin cells, and these flakes make up a significant portion of the dust found in our homes. It is estimated that a substantial amount of the dust we encounter on a daily basis consists of our own shed skin cells.
While these facts may seem gross to some, they highlight the fascinating complexity of the human body and the intricate relationships we have with the microscopic organisms that reside within us.