EPO and other red-cell increasing drugs provide a massive gain for endurance athletes (runners, cyclists, XC skiing). Steroids are a massive gain for strength athletes (sprinters/athletics, contact sports).
Both can be used "safely" or "unsafely" depending on dosage, combinations with other drugs, etc.
I don't know what the story is like for EPO and other red-cell increasing drugs. Would be curious to hear yours and a few others' understanding of the cost/benefit.
Asthma meds for cycling, some of which are steroids, are one of the more popular examples:
https://www.cyclingweekly.com/news/latest-news/the-truth-abo...
Two out of three factors have to be present to ban a drug:
- be performance enhancing - present a health risk - violate the spirit of sport
The third one is a bit harder to define but there is a WADA code defining the spirit of sport.
Most banned drugs are banned because of the first two.
> - be performance enhancing - present a health risk - violate the spirit of sport
There also are drugs banned that mask the use of performance enhancing drugs. You could call that “violate the spirit of the sport”, but that’s so vague a term it could cover anything.