Some of the possible negative consequences of wearing a thong are:
Infections
Given that clothing moves from one part of the skin to another during movement, and thongs are in a sensitive area where bacteria from the large intestine can easily be transferred to the urinary tract, Escherichia coli infections are very common. This bacteria can cause severe and painful inflammation of the urinary tract.
Irritations and redness
Due to the friction that occurs during movement, the sensitive part of the skin near the crotch can be irritated, which in turn can lead to infection and inflammation.
Thongs are mostly made of artificial materials such as lycra, viscose, so irritation and redness on the skin are also possible due to sweating, because artificial materials, unlike cotton, do not absorb liquid so well.
Although there is a possibility for all the mentioned dangers, they do not happen that often and their direct connection with wearing thongs cannot be determined exactly. But, if you have frequent urinary tract infections, and you wear thongs non-stop, then change that habit - their association with bacteria is established and indisputable.
Bonus video:
