WebMD Sexual Conditions changes — archived 2017-10-02, date approximate

1

[Sexually transmitted diseases](http://www.webmd.com/sexual-conditions/default.htm), commonly called [STDs](http://www.webmd.com/sexual-conditions/rm-quiz-stds), are diseases that are spread by having [sex](http://www.webmd.com/sex-relationships/default.htm) with someone who has an STD. You can get a [sexually transmitted disease](http://www.webmd.com/sexual-conditions/ss/slideshow-std-pictures-and-facts) from sexual activity that involves the [mouth](http://www.webmd.com/oral-health/anatomy-of-the-mouth), [anus](http://www.webmd.com/digestive-disorders/picture-of-the-anus), [vagina](http://www.webmd.com/women/picture-of-the-vagina), or [penis](http://www.webmd.com/men/picture-of-the-penis).

1

[Sexually transmitted diseases](https://www.webmd.com/sexual-conditions/default.htm), commonly called [STDs](https://www.webmd.com/sexual-conditions/rm-quiz-stds), are diseases that are spread by having [sex](https://www.webmd.com/sex-relationships/default.htm) with someone who has an STD. You can get a [sexually transmitted disease](https://www.webmd.com/sexual-conditions/ss/slideshow-std-pictures-and-facts) from sexual activity that involves the [mouth](https://www.webmd.com/oral-health/anatomy-of-the-mouth), [anus](https://www.webmd.com/digestive-disorders/picture-of-the-anus), [vagina](https://www.webmd.com/women/picture-of-the-vagina), or [penis](https://www.webmd.com/men/picture-of-the-penis).

2

3

According to the American Social Health Organization, one out of four [teens](http://teens.webmd.com/default.htm) in the United States becomes infected with an STD each year. By the age of 25, half of all sexually active young adults will get an STD.

3

According to the American Social Health Organization, one out of four [teens](https://teens.webmd.com/default.htm) in the United States becomes infected with an STD each year. By the age of 25, half of all sexually active young adults will get an STD.

+[Sexually transmitted diseases](http://www.webmd.com/sexual-conditions/default.htm), commonly called [STDs](http://www.webmd.com/sexual-conditions/rm-quiz-stds), are diseases that are spread by having [sex](http://www.webmd.com/sex-relationships/default.htm) with someone who has an STD. You can get a [sexually transmitted disease](http://www.webmd.com/sexual-conditions/ss/slideshow-std-pictures-and-facts) from sexual activity that involves the [mouth](http://www.webmd.com/oral-health/anatomy-of-the-mouth), [anus](http://www.webmd.com/digestive-disorders/picture-of-the-anus), [vagina](http://www.webmd.com/women/picture-of-the-vagina), or [penis](http://www.webmd.com/men/picture-of-the-penis).
+[Sexually transmitted diseases](https://www.webmd.com/sexual-conditions/default.htm), commonly called [STDs](https://www.webmd.com/sexual-conditions/rm-quiz-stds), are diseases that are spread by having [sex](https://www.webmd.com/sex-relationships/default.htm) with someone who has an STD. You can get a [sexually transmitted disease](https://www.webmd.com/sexual-conditions/ss/slideshow-std-pictures-and-facts) from sexual activity that involves the [mouth](https://www.webmd.com/oral-health/anatomy-of-the-mouth), [anus](https://www.webmd.com/digestive-disorders/picture-of-the-anus), [vagina](https://www.webmd.com/women/picture-of-the-vagina), or [penis](https://www.webmd.com/men/picture-of-the-penis).
+According to the American Social Health Organization, one out of four [teens](http://teens.webmd.com/default.htm) in the United States becomes infected with an STD each year. By the age of 25, half of all sexually active young adults will get an STD.
+According to the American Social Health Organization, one out of four [teens](https://teens.webmd.com/default.htm) in the United States becomes infected with an STD each year. By the age of 25, half of all sexually active young adults will get an STD.