I found this article on the internet:

DOCTORS are calling for G-strings to be banned — because they are bad for girls’ health.
Doctors in Europe warn that the skimpy panties can damage skin and cause infections.

Gynecologists prefer women to wear traditional bigger panties after seeing an “enormous” rise in patients reporting genital inflammation.

Dr Thomas Gent said: “G-strings can abrade and injure the sensitive skin around the genitals — especially if they are too tight or made with poorly stitched material.”

He said friction caused by the “string” part of the underwear is the root cause of the problem.

Dr Gent, of the Association of Gynecologists in Hamburg, added that the damage caused “can aid the spread of bacteria and cause fungal infections”.

Recent German studies found that 50% of women under 50 years old wear G-strings, and most men find them sexy.

But Mathias Geduhn, a spokesman for fashion chain H&M, revealed that “granny panties” are making a comeback.

He said: “The trend is turning to comfortable hot-pants and slips.”