Saving your skin...

Most pathogens have to get through the skin to do their damage in your body.

If the outer skin of your body is healthy and undamaged, the agents causing sexually transmitted diseases have virtually no way in. The outer skin covering your dick and balls is also quite tough. As long as the skin hasn't been damaged (for instance by piercing), no pathogens can get through.

The skin around your arsehole and on the head of your dick is much more sensitive. Sex causes tiny wounds or scratches here, which you can't see with the naked eye and which aren't necessarily painful. These are places where agents causing venereal disease can find a way in.

Inside your penis is the seminal and urinary duct – the tube in your dick through which cum and piss leave your body. The mucous skin here is very sensitive and moist. You also have a mucous lining in your throat and in your backside, in the anus. This skin is highly vulnerable to a lot of disease-causing agents.

The danger point always comes when your skin (especially mucosa) isn't 100 per cent intact. Injuries, open wounds, bleeding or weeping spots make it easy for bacteria to get inside your body. This is when you have to be especially careful and avoid any contact with body fluids.

A condom provides good protection for your most sensitive parts!