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The IAAF rules excluded athletes from competing in the specified events, unless they reduced their testosterone below 5 nmol/L, a lower level of testosterone than previously, suggested to be a more realistic limit for testosterone for women without DSDs. [23] The regulations were published 23 April 2018, to be effective from 1 November 2018.
Testosterone levels in males and females ; Total testosterone Stage Age range Male Female Values SI units Values SI units ; Infant: Premature (26–28 weeks) 59–125 ng/dL: 2.047–4.337 nmol/L
Research on women and testosterone has been limited, but as more is done, experts are seeing that the hormone affects the female sex drive, just as it does the male. It also plays an essential ...
A study published in 2017 by Stéphane Bermon and Pierre-Yves Garnier analyzed 2,127 performances and hormone concentrations in male and female elite track and field athletes during the 2011 and 2013 Track and Field World Championships. When compared with women with lower levels of the hormone free testosterone (fT), women with the highest fT ...
In both women and men, it’s normal for testosterone levels to drop with age — starting at about age 30 in men and around 40 in women. The decline doesn’t mean that it necessarily needs to be ...
Testosterone is an essential hormone for both men and women, playing an important role in muscle growth and cognitive function. Low levels of the hormone can lead to changes in mood, cognition and ...
Previously in October 2019, World Athletics had allowed trans athletes with a testosterone level limited at 5 nmol/L. [85] According to regulations from October 2019, in order for a trans woman to compete in the women's category: "3.2.1 she must provide a written and signed declaration, in a form satisfactory to the Medical Manager, that her ...
World Athletics also reduced its testosterone threshold for all events, which will impact athletes with differences in sex development (DSD). According to the council, 13 athletes will be impacted ...