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Caster Semenya in 2012. Photo: Ian MacNicol/Getty Images

Namibian 18-year-old sprinters Christine Mboma and Beatrice Masilingi will not be allowed to compete in the women's 400 meters at the Tokyo Olympics due to having naturally high testosterone levels, according to the Namibia National Olympic Committee.

Driving the news: The sprinters now join South African runner Caster Semenya, who is banned from competing after World Athletics ruled in 2018 "that to ensure fair competition, women with high natural testosterone levels must take medication to reduce them to compete in middle-distance races," CNN writes.

Details: The Namibian committee said the testosterone levels were detected in medical assessments required by World Athletics. Neither athlete, their families, coaches or the committee knew about the condition.

  • World Athletics says the "female classification is 'protected'" and "individuals who identify as female but have a certain difference of sex development (DSD) (which means that they have the same advantages over women as men do over women) can pose a challenge to that protected category."

Yes, but: There is "limited research to support the claim that higher testosterone levels offer an unfair advantage," Axios' Jeff Tracy writes.

What's next: The Namibian committee said Mboma and Masilingi will still be allowed to compete in the 100- and 200-meter races.

Go deeper

Pelosi says it's her "plan" to appoint GOP Rep. Kinzinger to Jan. 6 committee

House Speaker Nancy Pelosi (D-Calif.) said Sunday that it is her "plan" to appoint Rep. Adam Kinzinger (R-Ill.) to the House select committee investigating the deadly Jan 6. Capitol riots.

Why it matters: Pelosi's statement to ABC's "This Week" comes after she rejected two of the five Republican appointments offered by House Minority Leader Kevin McCarthy (R-Calif.).

Updated 2 hours ago - Sports

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Go deeper: Full Axios coverage

Bezos beats Branson in space billionaires' battle for attention

Photo illustration: Aïda Amer/Axios. Photo: Imtiyaz Shaikh (Anadolu Agency), Drew Angerer/Getty Images

Jeff Bezos' flight into space generated more interest from the public than Richard Branson's, and both billionaires overshadowed their respective space companies.

Why it matters: Data shows an outsized public interest in the personalities at the center of the space trips, compared to the companies behind them — which could reinforce public suspicion that the ventures were partly vanity plays.

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