Safe sex in the context of "Vaginal"

Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent pregnancy. Birth control has been used since ancient times, but effective and safe methods of birth control only became available in the 20th century. Planning, making available, and using human birth control is called family planning. Some cultures limit or discourage access to birth control because they consider it to be morally, religiously, or politically undesirable.

The World Health Organization and United States Centers for Disease Control and Prevention provide guidance on the safety of birth control methods among women with specific medical conditions. The most effective methods of birth control are sterilization by means of vasectomy in males and tubal ligation in females, intrauterine devices (IUDs), and implantable birth control. This is followed by a number of hormone-based methods including contraceptive pills, patches, vaginal rings, and injections. Less effective methods include physical barriers such as condoms, diaphragms and fertility awareness methods. The least effective methods are spermicides and withdrawal by the male before ejaculation. Sterilization, while highly effective, is not usually reversible; all other methods are reversible, most immediately upon stopping them. Safe sex practices, such as with the use of condoms or female condoms, can also help prevent sexually transmitted infections. Other birth control methods do not protect against sexually transmitted infections. Emergency birth control can prevent pregnancy if taken within 72 to 120 hours after unprotected sex. Some argue not having sex is also a form of birth control, but abstinence-only sex education may increase teenage pregnancies if offered without birth control education, due to non-compliance.

A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is spread by sexual activity, especially vaginal intercourse, anal sex, oral sex, or sometimes manual sex. STIs often do not initially cause symptoms, which results in a risk of transmitting them to others. The term sexually transmitted infection is generally preferred over sexually transmitted disease or venereal disease, as it includes cases with no symptomatic disease. Symptoms and signs of STIs may include vaginal discharge, penile discharge, ulcers on or around the genitals, and pelvic pain. Some STIs can cause infertility.

Bacterial STIs include chlamydia, gonorrhea, and syphilis. Viral STIs include genital warts, genital herpes, and HIV/AIDS. Parasitic STIs include trichomoniasis. Most STIs are treatable and curable; of the most common infections, syphilis, gonorrhea, chlamydia, and trichomoniasis are curable, while HIV/AIDS and genital herpes are not curable. Some vaccinations may decrease the risk of certain infections including hepatitis B and a few types of HPV. Safe sex practices such as the use of condoms, having smaller number of sexual partners, and being in a relationship in which each person only has sex with the other also decreases STIs risk. Comprehensive sex education may also be useful.

Sex and the law deals with the regulation by law of human sexual activity. Sex laws vary from one place or jurisdiction to another, and have varied over time. Unlawful sexual acts are called sex crimes.

Some laws regarding sexual activity are intended to protect one or all participants, while others are intended to proscribe behavior that has been defined as a crime. For example, a law may proscribe unprotected sex if one person knows that they have a sexually transmitted infection or to protect a minor; or it may proscribe non-consensual sex. In general, laws may proscribe acts which are considered either sexual abuse or behavior that societies consider to be inappropriate and against the social norms. Sexual abuse is unwanted sexual contact between two or more adults or two or more minors, and, depending on laws with regard to age of consent, sexual contact between an adult and a minor.

The 1990s (often referred and shortened to as "the '90s" or "the Nineties") was the decade that began on 1 January 1990, and ended on 31 December 1999. Known as the "post-Cold War decade", the 1990s were culturally imagined as the period from the Revolutions of 1989 until the September 11 attacks in 2001. The dissolution of the Soviet Union marked the end of Russia's status as a superpower, the end of a multipolar world, and the rise of anti-Western sentiment. China was still recovering from a politically and economically turbulent period. This allowed the US to emerge as the world's sole superpower, creating relative peace and prosperity for many western countries. During this decade, the world population grew from 5.3 to 6.1 billion.

The decade saw greater attention to multiculturalism and advance of alternative media. Public education about safe sex curbed HIV in developed countries. Generation X bonded over musical tastes. Humor in television and film was marked by ironic self-references mixed with popular culture references. Alternative music movements like grunge, reggaeton, Eurodance, K-pop, and hip-hop, became popular, aided by the rise in satellite and cable television, and the internet. New music genres such as drum and bass, post-rock, happy hardcore, denpa, and trance emerged. Video game popularity exploded due to the development of CD-ROM supported 3D computer graphics on platforms such as Sony PlayStation, Nintendo 64, and PCs.

Abstinence-only sex education (also known as sexual risk avoidance education) is a form of sex education that teaches not having sex outside of marriage. It often excludes other types of sexual and reproductive health education, such as birth control and safe sex. In contrast, comprehensive sex education covers the use of birth control and sexual abstinence.

Evidence does not support the effectiveness of abstinence-only sex education. It has been found to be ineffective in decreasing HIV risk in the developed world. It does not decrease rates of sexual activity or unplanned pregnancy when compared to comprehensive sex education.