The surprising truth about the dregs 'super dirty' in the navel is not everyone has

Only some people have this dirt in their navel, and actually its composition is enough to surprise you.

There must have been a lot of you feel quite . frustrated, when your belly button sometimes appears dirty looking very strange like the image below.

This sediment actually formed from cotton.

Those deposits are actually formed from . cotton fabric . The thing is, not everyone has "bliss" appearing cotton in the navel, but only those with "special" structure.

Belly hair - one of the leading reasons for creating cotton fibers

According to a study by Dr. Karl Kruszelnicki from the University of Sydney (Australia), the appearance of cotton in the navel appears mainly in middle-aged men with a relatively thick density of hair on the body.

To make this conclusion, Kruszelnicki surveyed to delineate those with this phenomenon. Besides, he also collected some cotton samples in the navel of volunteers and asked some people to shave off all the belly hairs around the navel.

The results showed that shaving off the belly hair completely reduced the accumulation of cotton fibers in the navel of some volunteers.

The umbilical cord fabric appears mainly in middle-aged men with a relatively thick density of hair on the body.

Kruszelnicki said that, during the daily movement of humans, the abdomen was frictioned with the fabric of the shirt, resulting in the cotton fiber falling gradually, entering the navel.

Kruszelnicki is not the only one who cares about this phenomenon. In 2009, a technology researcher named Georg Steinhauser of the University of Vienna (Austria) also gave convincing evidence to draw conclusions similar to Kruszelnicki.

Shaving away belly hair is over.

To serve the research process, Steinhauser brought himself to be the experiment. He collected cotton fibers in his abdomen every morning, continuously for 3 years. According to Steinhauser, cotton fibers in the navel are not formed due to being dirty, so even if you take a bath 10 times a day, this phenomenon will still occur.

And like Kruszelnicki and Steinhauser, he concluded that the culprit of hoarding cotton in his navel is the belly hairs.

Belly hairs act as hooks, pull the cotton thread back and store it in the navel. This hypothesis was quickly confirmed when every day, the few cotton threads taken by Steinhauser were the same color as the clothes worn the day before.

The secret behind the cotton fibers in the navel

Not only stopping after finding the "culprit" of navel cotton, Steinhauser also studied and analyzed the chemical composition of these cotton fibers.

In a collection of cotton from a volunteer wearing a 100% cotton shirt, Steinhauser was surprised when many cotton fibers contained many other compounds: dust, dead skin, fat , protein, and . deposits of sweat.

On this basis, he argued that cotton fibers in the navel would serve as a device for sucking bacteria and dirt, helping us to have a cleaner umbilical cord than ordinary people.

Cotton fiber in the navel can act as a microbial suction device.

Steinhauser's argument has been further demonstrated by Rob Dunn's research, from the University of North Carolina, USA. Dunn and his colleagues collected 500 cotton samples, but what and colleagues cared about was not cotton but the system of microorganisms in it.

Preliminary research results show that there are about 2368 species of microorganisms in cotton samples, and many of them are still undetermined.

In short, we now know that the cotton fibers in the navel are very dirty, but very good for the body. Because every time we pick up these cotton fibers, bacteria and hate also follow this cotton thread out of the body.

So feel lucky if your belly button has such cotton threads.