Protecting young and vulnerable athletes  Even if performance-enhancing drugs were only legalized for adults, the definition of this varies from country to country, something which would be problematic for sports that are global. Teenage athletes train alongside adult ones and share the same coaches, so many would succumb to the temptation and pressures to use drugs, if these were widely available and effectively endorsed by legalization. Not only are such young athletes unable to make a fully rational, informed choice about drug-taking, the health impacts upon growing bodies would be even worse than for adult users. It would also send a positive message about drug culture in general, making the use of “recreational drugs” with all their accompanying evils more widespread.