Caster Semenya will have to reduce hormone levels to compete at Olympics

Athletics South Africa (ASA) says it will study newly introduced rules by the International Association of Athletics Federation (IAAF) for female runners.

For now, the new regulations will only apply to women's global track events from 400m to the mile, and doesn't necessarily ban women with DSDs from competing: they will still be free to race in national competitions, in events other than 400m to the mile, and in male or "intersex" classified races. These distances, which synthesize the need for speed, power and endurance, are events in which raised testosterone levels can have the most profound influence on performances, the sport's top officials say.

Females are supposed to have low level of testosterone (0.12 to 1.79 nmol/L), a male hormone, in their blood stream and presence of about 5 nmol/L is seen as an anomaly.

The IAAF said: There is a broad medical and scientific consensus, supported by peer-reviewed data and evidence from the field, that the high levels of endogenous testosterone circulating in athletes with certain DSDs can significantly enhance their sporting performance.

No athlete, Dr Bermon said, would be forced to undergo surgery, adding that it would be the "athlete's responsibility to decide on her treatment".

The press reports said that the IAAF decision is expected to force Semenya either to take medication to reduce her naturally occurring testosterone levels or move to longer-distance events.

"It seems to be dreadfully unfair to pick on Caster this way", RSA.MommaCyndi, reacted an online article by South Africa's The Sowetan on the new rules.

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Coe was speaking after the IAAF Council announced last month that following a review of available evidence it would revise its regulations, with the changes coming into force on November 1.

From November 1, the IAAF will limit entry for all worldwide events from 400 meters through the mile to women with testosterone levels below a specified level.

The decisive factor for the Cas panel in 2015 was whether testosterone above the 10nmol/L threshold set by the IAAF gave female athletes a competitive advantage over their fellow competitors.

Research over a decade showed 7.1 in every 1000 elite track and field athletes had elevated testosterone levels - 140 times greater than the female population. Caster has been subjected to vicious attack and the ANCWL will unapologetically defend her against this attacks even when are smuggled through back door as laws by IAAF.

Katrina Karkazis said: "Lowering testosterone can have serious lifelong health effects".

"Once done, we will then inter-act with the IAAF. You can compete with males.' I don't think that's right".

  • Lawrence Cooper