Editing Testosterone (section)

====Sexual arousal====
{{See also|Hormones and sexual arousal}}

Testosterone levels follow a [[circadian rhythm]] that peaks early each day, regardless of sexual activity.<ref name="pmid5061159">{{cite journal | vauthors = Fox CA, Ismail AA, Love DN, Kirkham KE, Loraine JA | title = Studies on the relationship between plasma testosterone levels and human sexual activity | journal = The Journal of Endocrinology | volume = 52 | issue = 1 | pages = 51–8 | date = Jan 1972 | pmid = 5061159 | doi = 10.1677/joe.0.0520051 }}</ref>

In women, correlations may exist between positive orgasm experience and testosterone levels. Studies have shown small or inconsistent correlations between testosterone levels and male orgasm experience, as well as sexual assertiveness in both sexes.<ref name="pmid19409392">{{cite journal | vauthors = van Anders SM, Dunn EJ | title = Are gonadal steroids linked with orgasm perceptions and sexual assertiveness in women and men? | journal = Hormones and Behavior | volume = 56 | issue = 2 | pages = 206–213 | date = August 2009 | pmid = 19409392 | doi = 10.1016/j.yhbeh.2009.04.007 | hdl-access = free | s2cid = 14588630 | hdl = 2027.42/83876 }}</ref><ref>{{cite journal | vauthors = Cashdan E | title = Hormones, sex, and status in women | journal = Hormones and Behavior | volume = 29 | issue = 3 | pages = 354–366 | date = September 1995 | pmid = 7490010 | doi = 10.1006/hbeh.1995.1025 | s2cid = 40567580 }}</ref>

Sexual arousal and [[masturbation]] in women produce small increases in testosterone concentrations.<ref name="pmid10367606">{{cite journal | vauthors = Exton MS, Bindert A, Krüger T, Scheller F, Hartmann U, Schedlowski M | title = Cardiovascular and endocrine alterations after masturbation-induced orgasm in women | journal = Psychosomatic Medicine | volume = 61 | issue = 3 | pages = 280–89 | year = 1999 | pmid = 10367606 | doi = 10.1097/00006842-199905000-00005 }}</ref> The [[Blood plasma|plasma]] levels of various [[steroids]] significantly increase after masturbation in men and the testosterone levels correlate to those levels.<ref name="pmid135817">{{cite journal | vauthors = Purvis K, Landgren BM, Cekan Z, Diczfalusy E | title = Endocrine effects of masturbation in men | journal = The Journal of Endocrinology | volume = 70 | issue = 3 | pages = 439–44 | date = Sep 1976 | pmid = 135817 | doi = 10.1677/joe.0.0700439 }}</ref>