Who really wins if the Enhanced Games go ahead?

Billed as a rival to the Olympic Games, the Enhanced Games – set to take place in 2025 – is a sporting event with a difference: athletes will be allowed to dope. Ian Sample talks to chief sports writer Barney Ronay about where the idea came from and how it’s being sold as an anti-establishment underdog, and to Dr Peter Angell about what these usually banned substances are, and what they could do to athletes’ bodies