Darryl Webster said:
I recall some research in the 80`s that looked into the effects of GT riding on life expetancy and found that the average was reduced. Not by a vast amount as I recall but still significant.
Perhaps others might recall this research..I believe it was conducted by French academics and correlated average age at death of a large number of TDF riders from years gone by.
You might be referring to the statistics kept by De Mondenard, a French medical Dr, definitely one of the most knowledgeable people on the subject of doping.
He keeps adding to his database. A few years ago he published a huge "dictionnary" on doping easily found on the net.
His studies show that while pre WWII pro cyclists (or Tdf racers, not sure which) outlived the general population by many years, the situation has reversed itself since WWII.
However, it does not seem to me that he tries to make a scientific study : he does not try to match samples of racers vs general population, etc. He also lumps together racers whose deaths may have been from causes probably unrelated to doping .
ex of such deaths
- Ocana committed suicide because he was going to die from cancer if i remember correctly
- Claveyrolat because he got into depression after causing a car accident that maimed a child for life
- El Chaba's problems before his suicide may have been related to his doping, but it's not certain
- Koblet car accident (could have been suicide)
- Robic car accident........
It's not easy to make a scientifically valid comparison of a small group with the general population, at most you can get hints.
Still, if the differences are huge you can reasonably draw some conclusions, example :
Selon le docteur Jean-Pierre de Mondenard, qui a étudié les dossiers médicaux des participants du tour de France depuis 1947, pour les coureurs le risque de décès cardiaque avant 45 ans est cinq fois supérieur à la moyenne.
For TdF participants, the odds for dying from heart problems before age 45 are 5 times higher than in the general population.