The original winning bid for the competition was for London but the cost to build the required stadium at Picketts Lock and host the event was deemed too expensive by the government. UK Athletics suggested to move the host city to Sheffield, but the IAAF stated that having London as the host city was central to their winning the bid. The championships bidding process was reopened as a result. The United Kingdom's withdrawal as host was the first case for a major sporting event in a developed country since Denver's withdrawal as host of the 1976 Winter Olympics. Helsinki was considered by many to be the outsider in the race to host the games with rival bids being presented by Berlin in Germany; Brussels in Belgium, Budapest in Hungary, Moscow in Russia and Rome in Italy.
With the addition of the women's 3000 metres steeplechase to the schedule, that year's program of events was closer to parity for women and men. With the exception of the 50 km walk the women competed in practically the same events as the men. Two differences remaining from before, though, were the short hurdles race, and the multi-event competition. Since the first World Championships in Helsinki 1983, seven new events have been added for women:
The IAAF conducted their largest ever anti-doping program at an athletics event for the championships, with 705 athletes subjected to a total 884 of tests. There were two athletes who failed drugs tests: Indian discus thrower Neelam Jaswant Singh tested positive for the stimulant pemoline, and Vladyslav Piskunov, a Ukrainian hammer thrower, tested positive for the steroid drostanolone. Singh received a two-year ineligibility ban, while Piskunov received a life ban from athletics as this was his second offence. In March 2013, the IAAF announced that re-testing of samples taken during these championships revealed that five medal winners had proved positive for banned substances. The athletes involved were Belarusian Nadzeya Ostapchuk, Belarusian Ivan Tsikhan, Russian Olga Kuzenkova, Russian Tatyana Kotova and Belarus's Vadim Devyatovskiy. Belarusian Andrei Mikhnevich had also tested positive and was disqualified.
Men's results
Track
| 2003 | 2005 | 2007 | 2009 Note: * Indicates athletes who ran in preliminary rounds.
Field
| 2003 | 2005 | 2007 | 2009
Women's results
Track
| 2003 | 2005 | 2007 | 2009 Note: * Indicates athletes who ran in preliminary rounds.