i am 18 years old male..i have never worn underwear in my life..a friend of mine recently told me that i can have some disease if i dont wear it...i want to ask if there are any medical health disadvantages of not wearing underwear?
As long as you wear pants ONLY ONE TIME and then wash them, it is doubtful you will have health problems. You will need a huge supply of pants or do laundry more frequently. Airing out pants over night does not take the place of washing, odors do linger.
Wearing pants over and over again is as gross as wearing the same underwear over and over.
If you wear pants more than one day, they will be contaminated with sweat, body oil, and residue from going to the bathroom and will be odorous. Nothing worse than rancid pee dribbles. Years ago it was referred to as "tail odor" and you don't want a stinky tail!
Going dirty sets you up for infections, etc. It certainly will not be healthy for your social life.
Most people that wear clothes over and over do not smell themselves, but, others do.