Dame Jessica Ennis-Hill remains hopeful London's World Championships will not be tarnished by doping but warned any problems will not disappear overnight.
The 2012 Olympic heptathlon champion wants to see a clean summer as she prepares to collect her third World Championship gold.
Ennis-Hill is due to receive heptathlon gold from Daegu 2011 after she was upgraded from silver when Tatyana Chernova was stripped of her title last November following a doping offence.
Jo Pavey is also in line to receive a 10,000 metres World Championship bronze from 2007 after she moved up from fourth last month when Turkish athlete Elvan Abeylegesse retrospectively failed a doping test.
She is due to join Ennis-Hill at a special ceremony in London in August and Ennis-Hill, who retired last year, hopes others will avoid their long wait.
"We have made massive steps to becoming a cleaner sport in the past year but there's a lot that needs to be done," she told Press Association Sport. "It's not something that's going to happen in a short amount of time.
"Hopefully we have a fantastic World Championships and we don't have this case of three, four or five years down the line where people are having medals stripped off them.
"I hope as we continue with our sport over the next few years it just gets better and better.
"You've got to not become distracted by those small number of cases and people who do decide to cheat, and remember there are a hell of a lot of athletes who train really hard and do it the right way.
"You can't have that assumption that every athlete is cheating if they get on the podium because that's definitely not the case."
Kelly Sotherton will also benefit from Chernova's failed tests and will receive a 2008 Olympic heptathlon bronze, having initially finished fifth, after the International Olympic Committee disqualified the Russian athlete for testing positive for a steroid during the Beijing Games.
Ennis-Hill's medal will be her third World Championship gold but she has mixed emotions after missing out six years ago, ahead of her expected ceremony in London.
"Not being a part of it in a competitive way it'll be really special not to have to do all the events. I'll just be able to go straight up and get a medal," said the 31-year-old, who won Olympic silver last year and was made a dame last week.
"At the time (in 2011) I was happy I'd won a medal but also disappointed and taken aback as I'd trained so hard to be in the best shape I could be before a home Olympics.
"I probably wouldn't change anything because it set me on the right path to put me in the right position for London but I remember that feeling of real disappointment. To not have that moment at the top of the podium when I actually deserved it is quite upsetting."
Ennis-Hill was speaking at the launch of VitalityMove, a running festival which takes place in Chatsworth on July 9 and in Windsor in September.
She said: "It's offering traditional 5k and 10ks but also music miles, which are one mile loops with music hubs which is something a little bit different.
"It's creating a festival feel which families can come along and enjoy. It's about wanting to encourage families to come along and people who haven't necessarily run much to enjoy being in an active environment."