Stossel wondered why if vitamins and protein supplements were legal, then why not steroids.
And? Your point being what, exactly? In fact, steroids are NOT illegal, generally, are they? You can be prescribed steroids quite legally. Stossel's problem is government deciding that they ought to be illegal for SOME, like athletes, and legal for others. This is not a proper area for the application of governmental force - that's Stossel's point. If the sporting bodies want to ban these substances, that's their prerogative. No problem for me, Stossel, or perhaps you.
I can tell you that to my certain knowledge there are some nutritive supplements with enhanced delivery coming down the pike - already being used in racehorses to astounding effect - which provide increased stamina and endurance. These supplements and the associated delivery technology are certain to find their way into human supplementation. The company behind the technology already does business with GNC, so GNC is certain to be aware of it. To repeat - these are all entirely natural and legal supplements, just delivered more efficiently.
Should they also be made illegal? Illegal for everyone? Illegal for some? Made illegal by government? And if so, to what legitimate end?