Sexuality refers to a human’s ability to experience pleasure from sexual activity and practices in its broadest sense. Sexual norms and practices are inextricably linked to prevailing cultural norms and individual identity (e.g., sexual and gender identification) and personality (e.g., gender roles). They also encompass multiple dimensions of psychology and behavior, including relationship structure (e.g., partner choice and object attraction); reproduction (e.g., biological roles); and recreation (e.g., pleasure and eroticism). Sexual customs and traditions are critical to public health because they are associated with multiple health outcomes, including physical, emotional, mental, and social well-being. Sexual health is a fundamental human right, including pleasure and desire, reproductive and relationship choices, and freedom from violence and coercion. As humans initiate sexual activity in adolescence and over the life course, sexuality carries the possibility of disease. In that sense, safer sexual practices, such as using a condom during intercourse or using pre-exposure prophylaxis to prevent HIV acquisition, are those that prevent sexually active people from acquiring sexually transmitted infections. Comprehensive rights-based sexuality education is a cornerstone of sexual health, as discussed in the Oxford Bibliographies in Public Health article Sex Education in HIV/AIDS Prevention by Jessica M. Sales and Ralph J. DiClemente. Freedom to choose a partner is a human right, which has faced multiple challenges to its exercise. Women and girls in many contexts have faced forced and child marriage, and sexual minorities have often faced stigma and discrimination, with the beginning of same-sex marriage legislation being passed relatively recently in modern history and not worldwide. The rights of gender nonconforming individuals to affirm their gender identity have only even more recently begun to be recognized. Sex is inextricably linked with reproduction; evolutionary theories have posed that partner choice and sexual attractiveness are based on the biological desire to reproduce, with marked sex differences in reproductive roles. However, women and girls have faced challenges in making reproductive choices and accessing modern family planning to prevent unwanted pregnancies and protect their health. Gender norms regarding sexuality have been more permissive to male sexuality in specific historical periods while limiting women’s sexual choices. Furthermore, power inequalities between the sexes have placed women, girls, and sexual minorities at increased risk for unwanted or coerced sex, gender-based violence, injury, and death. From a Western perspective, this article summarizes the leading public health issues related to sexuality and sexual norms and customs within sexual and reproductive health and rights. We have limited our focus to sexuality and sexual health in the West as we believe that fully representing the diversity of global perspectives would necessitate a separate entry.
When discussing and researching sexual practices and customs, definitions of key terms are essential to ensure homogeneity and clarity, particularly given that specific terms, such as ““sex” and “gender,” which have different meanings are often interchanged. Various professional fields approach sex and sexual customs and practices from a different perspective; even within a given field, multiple definitions exist for the same concept, or concepts are used interchangeably even though they have different nuances. In this section, we cite a few go-to sources to provide a better picture of the other existing terminologies in the fields of public health, psychology, and sociology. The World Health Organization 2006 has defined vital concepts and terms related to sex and sexual practices to harmonize terminology in the context of public health. The APA Dictionary of Psychology 2020, regularly updated to reflect changing discourse in the field, can be consulted for definitions related to the psychology of sex. In addition, APA Style 2020 presents guidelines on terminology recommended to ensure unbiased language, complemented by APA n.d consolidating terms related to sexual orientation and gender identity and providing source documents. Finally, Fischer 2016 summarizes the main issues and concepts related to diverse sexualities from a sociological standpoint.
Patterns of human sexuality are inextricably linked to the historical and cultural context and vary drastically from one culture to another and over the years. This introduction tries to present diverse perspectives related to an understanding of sex and sexuality from different fields of practice and specific subpopulations. Barker 2018 is an introductory text that provides an overview of human sexuality for lay readers and explores intercultural differences in sexual norms and customs. From an evolutionary perspective, sex evolved from a need for reproduction. Two textbooks are included that discuss the evolutionary origins of human sexuality. Gray and Garcia 2016, in a book intended for a lay audience, provides an overview of human sexual behavior. In contrast, in his book on the origins of human mating systems, Dixon 2009 provides a cross-cultural overview of mating arrangements, including the preponderance of monogamy and limited extra-pair paternity, and issues related to differential male and female attractiveness and sexual selection primarily via female choice. Sex, as associated with pleasure, has also been the subject of study. Behavioral scientists have long been puzzled over the unexplained role of the female orgasm in evolution; Pavličev and Wagner 2016 propose a biological explanation that female orgasm, ancestrally, induced ovulation. In the collection of essays tailored to mental health professionals, Akhtar and Gulati 2019 provides an overview of current concepts related to eroticism. Schmitt and Buss 2000 draws on personality psychology to explain the dimensions of personality associated with different intimate relationships and attraction. A seminal work on human sexuality, Foucault 1976–1984 uses discourse to analyze why sex and sexual orientation are taboo in the West, focusing on homosexuality. Kang, et al. 2017 provides an introductory text to sexuality from feminist sociology, analyzing female sexuality in the context of socially constructed structures of power. Aggleton, et al. 2018, a collection of essays, discusses the experiences of gender- and sexually-diverse youth and their actions to expand normative conceptions of sex and gender. Finally, Meyerowitz 2004 presents the history of transsexuality in the United States.
In recent decades, significant progress has been made toward achieving sexual and reproductive health and rights (SRHR) for all. The International Conference on Population and Development Programme of Action (ICPD) and the Beijing Declaration Platform for Action are landmark resolutions passed in the mid-1990s, articulating a groundbreaking vision for SRHR, and were recently reaffirmed by the global community marking twenty-five years since their passage. The import of the ICPD is summarized in the report the United Nations Population Fund 2019, while the final adopted text for the Beijing Declaration can be found in United Nations 1995. Preceding the passage of these two resolutions, the reproductive justice movement had emerged as a formidable force in the United States in the 1980s and 1990s, securing gains for women and girls’ reproductive rights; the emergence of this movement is described further in The History of Reproductive Justice Movement. World Health Organization 2010 recounts progress made globally on SRHR since the ICPD and Beijing resolutions. Despite notable progress, this report acknowledges gaps and challenges that remain, turning its focus toward the future and posing solutions to close critical gaps in health outcomes and access to SRHR services and resources.
To fully appreciate recent progress in advancing the sexual and reproductive health and rights agenda, it is essential to understand the reproductive justice movement in the United States, which emerged in the 1980s and 1990s in response to SRHR and other social justice issues impacting women of color. In their 2001 mission statement, SisterSong, a reproductive justice organization founded in 1997, defines reproductive justice as “the human right to maintain personal bodily autonomy, have children, not have children, and parent the children we have in safe and sustainable communities.” Ross and Solinger 2017 provides a concise yet thorough introduction to the reproductive justice movement in the United States, outlining its history and present-day challenges. The reproductive justice movement cannot be separated from the struggle for racial justice and equality. In respective mission statements, Combahee River Collective 1977 and Black Women’s Health Project 1993/2018, two reproductive justice organizations founded by Black women, acknowledge the unique struggles experienced by Black women in the United States, including sexual oppression and disparities in sexual and reproductive health outcomes. The book Roberts 2017 traces the history of reproductive oppression against Black women in the United States, demonstrating how Black women’s right to reproductive choice has been systematically undermined. Although some of the first reproductive justice organizations were created to advance the rights of Black women, the banner of reproductive justice has also been taken up by the LGBTQ+ community, Indigenous women, Latinx women, and others. The Native American Women’s Health Education Resource Center, founded in 1988, is one such reproductive justice organization created to advance the reproductive rights of Indigenous women.
This overview of issues related to sexual health is divided into three broad subsections as follows: the first section presents authoritative sources of information on Sexuality and Sexual and Reproductive Health over the Life Course, which deal with topics related to healthy sexuality for the general population and specific age subgroups, such as adolescents and older adults; the second section, Safe Sex and Sexually Transmitted Infections, presents sources of information on issues related to safer sex promotion and prevalence of sexually transmitted infections in the United States overall and by specific population subgroups, including young and transgender people; and the third section focuses on Sex and Substance Use presenting evidence on the linkages between the use of substances, such as alcohol, and sexual health.
Promoting and maintaining sexual health requires strategies and approaches that change over the life course, spanning from sexual maturation and initiation around puberty to reproduction and supporting healthy sexuality in later years. The issues related to sexual health vary by age and sex, gender, and sexual orientation, thus requiring a tailored approach to care. This section presents a collection of sources that take a life course approach to sexual health to guide students, researchers, and practitioners. The U.S. Centers for Disease Control and Prevention (CDC) landing page on sexual health presents an overview of topics related to sexual health, which are developed in-depth in separate subpages. A resource for decision makers, the U.S. Department of Health and Human Services Healthy People 2030 presents the US government’s health priorities in sexual health to guide policy and program priorities. Next, we present several articles addressing adolescent sexual health and the specific considerations when examining sexuality in this age group: Fortenberry 2013 provides a framework for analyzing sexual development from a lifecourse approach, and Liang, et al. 2019 presents the global sexual and reproductive health priorities in adolescent health, focusing on the progress made in the last twenty-five years and the current gaps. The U.S. Department of Health and Human Services informational page on sexuality and the commentary Lusti-Narasimhan and Beard 2013 and Srinivasan, et al. 2019 present an overview of issues related to ensuring healthy sexuality among older adults who are past their reproductive years. Discuss approaches relevant to mental health professionals in treating older adults with sexual health concerns, and focus on the needs of sexual minorities.
Sexually transmitted infections (STIs), including HIV, affect millions of people in the United States each year and can have grave consequences including, pregnancy complications, infertility, cancer, and death, if not treated in a timely manner. Safer sexual practices, such as using condoms consistently in each sexual encounter, are strategies to prevent STIs that should be tailored to the needs of specific populations. The U.S. Centers for Disease Control and Prevention (CDC) provides information on the incidence and prevalence of STIs in the United States and informational materials for STI prevention. The commentary in Guilamo-Ramos, et al. 2019 is a call for renewed efforts to reach the populations most at risk for STIs, particularly young sexual minority men. Wangu and Burstein 2017 presents updated clinical guidelines for preventing, managing, and treating STIs among adolescents. Based on the Global Burden of Diseases, Injuries, and Risk Factors Study, Frank, et al. 2019 present the latest data on the incidence and prevalence of HIV worldwide and trends over the last thirty years. The meta-analysis in Becasen, et al. 2019 presents estimates of HIV prevalence among transgender people living in the United States, an understudied population. Finally, unprotected anal intercourse is among the riskiest sexual practices, however it has been almost exclusively studied among homosexual populations; the review Stewart, et al. 2020 presents the state of the literature on heterosexual anal intercourse, calling for additional research into this practice to inform STI prevention programs.
Due to the effect of psychoactive substances on mental functioning, including in areas of the brain related to judgment and decision making, a substantial body of literature has documented the role of substance use as a contributing factor to sexual risk taking; a phenomenon that is particularly pronounced among adolescents and young people who are exploring both sexuality and use of substances as part of normal development. The U.S. Centers for Disease Control and Prevention (CDC) provides general information and links to resources and educational materials on using different psychoactive substances and sexual risk among young people. Alcohol is the most widely used substance consumed worldwide, and a few of the articles presented here focus on the association between alcohol use and sexual health. The World Health Organization (WHO) 2005 presents findings from a multicountry study on the association of sexual risk-taking and alcohol use. In contrast, the discussion paper Capasso and DiClemente 2019 provides an ecological framework for the prevention of STI and problem alcohol use among women. In addition to alcohol, some substances are explicitly used to enhance sexual experiences. Lafortune, et al. 2020 discusses the factors associated with the use of Chemsex by men who have sex with men. Marijuana is another widely used, albeit understudied, substance associated with sexual risk taking. Pahl, et al. 2021 investigate marijuana use as a predictor of having a risky sexual male partner among ethnic and racial minority women and the role of ethnic identity commitment as a preventive factor. Jackson, et al. 2012 presents findings from a systematic review summarizing the evidence on interventions to promote safer sex and reduce substance use among school-aged children. Alcohol myopia theory (AMT) is one of the most popular theories used to explain sexual risk taking following alcohol use, and Griffin, et al. 2010 reviews the evidence on the efficacy of prevention interventions based on AMT.
Although progress has been made in closing critical gaps in sexual health outcomes, significant disparities remain. Black women face a disproportionate risk for poor sexual and reproductive health outcomes, ranging from increased HIV and STI incidence to higher preterm birth rates. Applying the social-ecological model, Prather, et al. 2016 explores the influence of racism on individual, interpersonal, and community-level determinants of sexual and reproductive health. Prather, et al. 2018, meanwhile, uses a historical lens to illuminate how discriminatory practices in the past shape early 21st century disparities in reproductive and sexual health among Black women. As Perritt 2020 demonstrates, the United States’s legacy of racism shapes health outcomes and health behaviors, and decisions surrounding sexual and reproductive health. Perritt recounts one example of this is birth-control mistrust among some women of color stemming from centuries of medical disenfranchisement and mistreatment. As in the case of Black women, systemic racism and transgenerational oppression have been implicated in health disparities observed among Indigenous women and Latinx women. Rosenthal and Lobel 2020 use survey data to establish possible pathways linking racism experienced by Latinx and Black women to poor reproductive and sexual health outcomes, while Gurr 2011 demonstrates how federal policies and practices through history have undermined the reproductive rights of Indigenous women. Fenton 2001, meanwhile, evaluates individual-level and community-level strategies for reducing race-based health disparities and addressing the social determinants of health underlying them. Although many members of the LGBTQ+ community and people with disabilities are subject to the harmful effects of racism, they are also subject to other forms of discrimination with negative consequences for their sexual health. Sexual inequities observed among LGBTQ+ individuals and people with disabilities are explored further in Inequities by Gender Identity and Sexual Orientation and Sexual Health Health Among People with Disabilities, respectively.
Research shows that LGBTQ+ individuals experience heightened vulnerability to specific poor sexual health outcomes along with barriers to SRHR services and equitable, culturally competent healthcare. Discrimination against LGBTQ+ individuals, which persists to this day in various overt and covert forms, has been a significant driver of these disparities observed in the United States and worldwide. Even within healthcare settings, LGBTQ+ individuals are often subject to bias among healthcare professionals, damaging patient-provider interactions, and dissuading of patients from seeking further care. Discrimination based on sexual orientation has also been linked to poor mental health outcomes. In their empirical review, Wade and Harper 2020 surveys the current evidence on racialized sexual discrimination, arguing that discrimination experienced by Black gay and bisexual men on online networking platforms can adversely impact their mental health. The report James, et al. 2016 from the National Center for Transgender Equality, meanwhile, provides insight into the types of discrimination transgender people experience, including bias among medical providers and lack of appropriate care. Dubin, et al. 2018 posits that the lack of culturally competent, compassionate healthcare may partially account for health disparities observed among transgender individuals. The authors review the current evidence on educational interventions to educate medical students on transgender health.
Due to many factors, ranging from social stigma to lack of culturally competent sexual health resources and services, people with disabilities often encounter barriers to realizing their SRHR rights. Alexander and Taylor Gomez 2017 illustrates in its commentary ways society has contributed to the sexual disempowerment of people with intellectual disabilities, making a case for more inclusive sex education. Addlakha, et al. 2017, in their editorial for Reproductive Health Matters issue on sexuality and disability, take stock of progress made on advancing the SRHR rights of people with disabilities while acknowledging barriers and gaps that persist. One barrier often cited in the literature is the lack of developmentally appropriate sexual education for people with intellectual disabilities, an issue explored in Black and Kammes 2019. Another barrier is inadequate training of healthcare providers to care for people with disabilities and provide culturally competent sexual health services. Mona, et al. 2017 proposes a disability and sexuality health care competency model to address this barrier. Similarly, Walters and Gray 2018 outlines ways pediatricians can provide sexual health education to youth with developmental disabilities. Streur, et al. 2019 highlights the need for sexual health discussions initiated by health care providers based on qualitative research conducted among women with spina bifida. A significant contributor to stigma surrounding sexuality and disability is the inaccurate perception of people with disabilities as being asexual, even among some healthcare providers. In their research article, Kattari and Turner 2017 challenge this perception, noting the diversity in sexual satisfaction levels and definitions of sexual activity reported by people with disabilities. For LGBTQ+ people with disabilities, navigating conversations about their sexuality and disability with healthcare providers can be a fraught process, an issue explored in O’Shea, et al. 2020. Evidence shows that people with disabilities are especially vulnerable to sexual abuse and gender-based violence, a direct violation of their sexual and reproductive rights. United Nations Population Fund (UNFPA) 2018 identifies priority areas and provides recommendations to improve the legal and social response to gender-based violence against young persons with disabilities.
Nonvolitional sex is defined as any unwanted sexual act that violates a person’s right to choose when, how, and with whom to engage in any form of sex. It may take the form of rape, sexual abuse, or sexual coercion. The report Smith, et al. 2017 presents the latest data on the prevalence of sexual violence in the United States based on a national survey, estimating that 36 percent of women and 17 percent of men have experienced sexual violence. Sexual violence has both immediate and long-term mental, physical, and reproductive health consequences, such as the increased risk for depression and posttraumatic stress disorder, and for sexually transmitted infections, unwanted pregnancy, pregnancy loss, and low-birth-weight newborns as described in Ellsberg, et al. 2008 and Jina and Thomas 2013. Sexual violence has significant societal consequences, including taking a toll on a person’s economic well-being, as explained in Loya 2015. Hailes, et al. 2019 summarizes the lifelong adverse effects of childhood sexual assault. The study of sexual violence has focused primarily on violence against women and girls; however, sexual violence against men and boys also has harmful consequences and is not uncommon among adult men, as noted in Peterson, et al. 2011, particularly among specific subpopulations. There is a mounting body of evidence indicating that gender and sexual minorities experience higher rates of sexual violence with long-lasting mental health outcomes, most likely compounded by a context of stigma and discrimination as described in Rothman, et al. 2011, as well as among persons involved in the criminal justice system as presented in Wolff, et al. 2006. Finally, a more recent area of research has focused on reproductive coercion, defined as a male partner using physical or emotional coercive strategies to make his female partner get pregnant, with adverse consequences on reproductive and mental health, including unplanned pregnancy and problem substance use, as described in Miller, et al. 2010 and Capasso, et al. 2019, respectively.
Few aspects of society have escaped the transformative, far-reaching effects of digital media. People’s intimate relationships and sexual lives are no exception. Nixon and Düsterhöft 2018 is a book that explores the transformation of human sexuality and the intimate relationships of digital media. With the advent of the Internet and the emergence of Internet-based porn, pornography consumption has risen steadily in recent decades. Facilitated in large part by the proliferation of smartphones, dating apps and sexting have also become more widespread. While references on sexting and data apps are featured below, references specific to pornography can be found in the subsection Internet Pornography. The rise of sexting among youth is explored in the systematic review and meta-analysis Madigan, et al. 2018. Barrense-Dias, et al. 2017, meanwhile, examines how sexting is conceptualized by researchers and adolescents, a key demographic linked to sexting. Similarly, Setty 2019 reveals young people’s attitudes toward sexting, finding gender stereotyping and victim-blaming prevalent among youth. Englander 2019, meanwhile, outlines three major phases in the research history of sexting, describing the shift from focusing on sexting’s potentially harmful consequences to normalizing the practice. Through interviews with caregivers of adolescents, Fix, et al. 2021 examines the trend of sexting from caregivers’ perspective, identifying the need for educating caregivers on the topic. Patchin and Hinduja 2020 argues for equipping parents and caregivers to talk about safe sexting practices with youth. A large body of research on sexting has focused on the practice’s adverse effects. For example, nonconsensual sexting has been equated by some researchers to sexual violence. In their systematic review, Krieger 2017 draws attention to the ways nonconsensual sexting is conceptualized in the literature. Like sexting, the use of dating apps has increased in recent years. As discussed in Albury, et al. 2020, the mental health impacts of dating apps have been hotly contested within popular media, with some sources framing dating apps as a threat to users’ mental health. Castro and Barrada 2020 paints a more nuanced picture of dating apps in their systematic review, highlighting the benefits and drawbacks of frequent dating app use.
With the rapid advance of media technology in recent decades, the consumption of Internet pornography has risen steadily. Recent research on Internet pornography consumption has refined understanding of the practice’s harms, benefits, and public perceptions. In their qualitative study, McCormack and Wignall 2017 explore the benefits of pornography, including Internet-based content, as a means for exploring sexuality and embracing nonheteronormative sexual identities. Using survey data collected among college students, Morgan 2011 parses out the effects of pornography on young people’s relationships and sex lives and characteristics associated with frequent exposure to sexually explicit material. Consistent with previous research, Morgan finds Internet-based porn a dominant form of pornography consumed among females and males alike. Pornography has been widely debated in society, with some even calling it a public health crisis. In their book, Sullivan and McKee 2015 critically analyzes the significant currents of thought in the pornography debate and challenge mainstream constructions of pornography and its role within the digital revolution. In light of recent legislation in various states declaring pornography to be a health crisis, Nelson and Rothman 2020 evaluates the rise of pornography against standards of what constitutes a public health crisis. Even after considering the recent emergence of Internet-based porn, the authors conclude that pornography consumption as a social phenomenon doesn’t define a public health crisis.