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As the controversy of gender norms continues to rage at the Paris Olympics, we explain what is testosterone and how it affects sports. read more
 "As gender row engulfs Paris Olympics boxing, what is testosterone?")
Italy's Angela Carini (C) reacts after she abandoned her fight against Algeria's Imane Khelif in their women's 66kg preliminary boxing match at the 2024 Summer Olympics in Paris. AP
Algerian boxer Imane Khelif’s 46-second win against Italy’s Angela Carini at the Paris Olympics has sparked a row after she was disqualified from a previous competition over reportedly high levels of testosterone.
Figures such as far-right Italian Prime Minister Giorgia Meloni quickly condemned that Khelif was allowed to compete at the Games.
The International Olympic Committee (IOC), which is overseeing the organising of boxing at the Games, defended its decision to allow them to compete, saying the pair were facing “aggression” because of an arbitrary decision.
Khelif is not alone. Chinese Taipei’s double world champion Lin Yu-ting, who is due to take the ring on Friday, have been cleared to compete in the Olympics despite previously being barred.
Khelif and Yu-ting had been disqualified at the 2023 World Championships after failing International Boxing Association (IBA) eligibility rules that prevent athletes with male XY chromosomes competing in women’s events.
As the controversy continues to rage at the Paris Olympics, here are some facts about testosterone.
What is testosterone?
Testosterone is a sex hormone produced by both men and women. However men produce up to 20 times more testosterone – primarily in the testicles.
Women make far less, in the ovaries and adrenal glands.
A normal level of testosterone for men is estimated to be 10 to 35 nanomoles per litre in blood, according to the US Mount Sinai hospital.
For women, it is between 0.5 to 2.4 nmol per litre.
Testosterone levels can also vary widely by age and time of year.
When people naturally produce an excess of sex hormones such as testosterone, it is called hyperandrogenism.
The condition affects an estimated five percent of women, with around 70 percent of cases caused by polycystic ovary syndrome, research has found.
Symptoms include acne, body hair growth and scalp hair loss.
How does this affect sport?
Testosterone can promote bone and muscle mass – deliberately boosting levels is a common form of doping and is banned.
Research has suggested that people with an excess of testosterone are over-represented in elite sport.
But just how much the hormone boosts performance remains a matter of debate.
The International Olympic Committee’s head of human rights Magali Martowicz said in 2021 that there no was no “scientific consensus” on how testosterone affects athletic performance.
At Tokyo 2020, New Zealand weightlifter Laurel Hubbard became the first openly transgender woman to take part in an Olympic event.
To qualify, she had to keep her testosterone levels below 10 nmol per litre for at least 12 months.
In spite of meeting the requirements, Hubbard’s participation was widely criticised.
At the end of 2021, the IOC gave up on establishing uniform guidelines for this kind of participation criteria, leaving it to the separate international sport federations.
What about the boxers?
A real women, Angela Carini, who trained for years to box at the Olympics is “defeated” by a real man pretending to be a woman.
HE is a fraud, an imposter, and a liar.
Shame on EVERYONE who allows men to compete against women.
Democrats support this.
Khelif was disqualified during the boxing world championships last year after “elevated levels of testosterone failed to meet the eligibility criteria,” according to the IOC’s website.
Khelif and Yu-ting were both disqualified from the New Delhi event by the International Boxing Association (IBA) under Russian oligarch Umar Kremlev.
However because of governance, financial and ethical issues, the IBA was effectively expelled from the Olympic movement last year.
In a statement on Wednesday, the IBA said the two boxers “did not undergo a testosterone examination but were subject to a separate and recognised test, whereby the specifics remain confidential”.
Joint Paris 2024 Boxing Unit/IOC Statementhttps://t.co/22yVzxFuLd pic.twitter.com/fZvgsW8OOi
— IOC MEDIA (@iocmedia) August 1, 2024IOC spokesman Mark Adams said everyone taking part in the women’s event was “complying with competition eligibility rules”.
“These athletes have competed many times before for many years, they haven’t just arrived, they competed in Tokyo,” he said.
“Testosterone is not a perfect test. Many women can have testosterone which is in what would be called ‘male levels’ and still be women, still compete as women,” he said.
“This idea that suddenly you do one test for testosterone and that sorts everything out – not the case, I’m afraid,” he added.
“I hope we’re all agreed that we’re not calling for people to go back to the bad old days of sex testing, which was a terrible thing to do.”
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English (US) ·