A weight-loss medication eased Serena Williams’s comeback. Experts can’t agree on whether that counts as doping.

Competing while using banned substances is one of elite sports’ most fiercely protected red lines. But this weekend, in the shadow of a Las Vegas casino, comes a one-day competition that has sparked ...

Competing while using banned substances is one of elite sports’ most fiercely protected red lines. But this weekend, in the shadow of a Las Vegas casino, comes a one-day competition that has sparked ...

The Enhanced Games is set to make its highly controversial debut on May 24. Dubbed a 'sci-fi' event hitting the Las Vegas streets, the premise of the competition centres on elite athletes pushing the ...