This is not a repository for all answers and statistics related to human sexuality, gender, or reproduction. The following only addresses questions frequently asked of the Kinsey Institute and its researchers. All information includes research sources and/or links to published studies and additional information. [KI] denotes any answer citing Kinsey Institute research.

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Teen sexual activity, contraceptive use, teen pregnancy, abortion, and STIs: American Teens' Sexual and Reproductive Health (2014)

28% of Americans over age 45 report they had sexual intercourse once a week or more in the last six months, and 40% report having intercourse at least once a month. More than one in five Americans over age 45 (22%) say they engage in self-stimulation at least once a week. Read more »

[KI] For more, see Sexual Behaviors, Condom Use, and Sexual Health of Americans Over 50: Implications for Sexual Health Promotion for Older Adults (2010)

Among ages 18-59, older age for men is associated with lower likelihood of his own orgasm; for women it is associated with a higher likelihood of her own orgasm. Age is not associated with the partner's orgasm for either men or women. (National Survey of Sexual Health and Behavior, 2010)

For women aged 50 and higher, older age is related to a decline in all sexual behaviors: 5% per year of age for penile-vaginal intercourse; 7% per year of age receiving or giving oral sex. (National Survey of Sexual Health and Behavior, 2010)

(Bondage, Discipline, Domination/Submission, Sadism/Masochism)

Sexual health Penis size

Menarche

Onset

Determininants of AAM

Breast cancer risk associated to AAM

Most estimates of age at natural menopause are based on samples of Caucasian women in western societies, although one international study of 18,997 women from 11 countries found the median age at natural menopause to be 50 years (range, 49–52 years).

African-American women experience menopause 6–12 months earlier than Caucasians, with a median age of 49.3 years for African Americans.

For Mexican women, median ages at menopause have been reported to be 48.2 years.

Japanese women reported a median age at menopause of 50.4 years. Malaysian women reported a similar median age at menopause of 50.7 years. Thai women reported a median age at menopause of 49.5 years. Filipino Malay women were reported to be an average age of 47–48 years at menopause.

Read more on these statistics »

More than half of women ages 18 to 49 reported masturbating during the previous 90 days. Rates were highest among those 25-29 and progressively lesser in older age groups. (National Survey of Sexual Health and Behavior, 2010)

Approximately one-third of women in all relationships in the 60- to 69-year cohort reported recent masturbation. (National Survey of Sexual Health and Behavior, 2010)

There is wide variability in what people consider included in "having sex." According to the study, considerations of "sex" also varied depending on whether or not a condom was used, female or male orgasm, and if the respondent was performing or receiving the stimulation. Read more »

45% of participants considered performing manual-genital stimulation to be "having sex"

71% considered performing oral sex to be "sex"

80.8% considered anal-genital intercourse to be "sex"

15% of men are estimated to have had sex with a prostitute. Read more »

Sexual assault & nonconsensual sexual contact Child sexual abuse

Child sexual abuse is believed to affect 10-25% of girls worldwide (World Health Organization, 2004).

In studies conducted mostly in developed countries, 5–10% of men report being sexually abused as children (World Health Organization, 2004)

An estimated 100 million to 400 million women worldwide have been subjected to Female Genital Mutilation (FGM). About three million girls are subjected to the procedure every year (World Health Organization, 2006).

Sexual Orientation Sexual attraction & activity: Opposite sex

95.3% of women and 93.5% of men aged 18–44 report ever having any opposite-sex sexual contact. (National Health Statistics Reports, 2016)

Median number of opposite-sex partners in lifetime among U.S. men and women aged 25-44 years of age is 6.6 for men and 4.3 for women. (National Center for Health Statistics, 2015)

Percentage of men and women aged 15-44 years of age who have had 15 or more opposite-sex sexual partners in their lifetime is 21.8% for men, and 10.6% for women. (National Center for Health Statistics, 2015)