Weightman, from Alnwick, originally finished 11th in the women’s 1500m final at London 2012 but was upgraded to seventh after four athletes were found to have doped including the two Turkish runners who originally claimed gold and silver.
Now the middle-distance star is backing UK Anti-Doping's Clean Sport Week to increase education on doping and its devastating implications.
“There was a lot of suspicion around the Turkish athletes, in particular, and alleged doping allegations,” the 30-year-old said.
“It did take quite a long time, unfortunately, for those athletes to be caught. The gold medalist was caught in 2013, but it actually took a number of years for the other athletes in the race to be caught.
“I think it took about four or five years for me to get a certificate to say I finished seventh. I remember, it just turned up in the post one year, and I wasn't expecting it.
“I think athletes were robbed of their Olympic performance there. Some athletes didn't make the final who should have done, some athletes didn't get out of the heat who should have done and it's for those athletes, not just myself, that potentially their Olympic outcome and experience could have been very different.”
As part of their Clean Sport Week, UKAD have released the findings of the survey that showed that doping can have a negative impact not just on the dopers themselves but also on their teammates and governing bodies.
And it is for that reason that Weightman is calling on all those involved in sport to educate themselves, using UKAD’s newly launched Clean Sport Hub.
Weightman said: “It starts with education, and I think education should start at a very young age, but not just with athletes. It should be everyone involved in the sport, it should be with the coaches, the parents, the sports clubs, everyone involved with that athlete right the way through up to the competition level.”
Clean Sport Week, which ran from 23-27 May, is UK Anti-Doping’s (UKAD’s) national awareness week, championing clean sport.