...decided to add my 2 pennies. unfortunately, the nice humanitarian ideals aren't linear.
i see 2 interlinked human rights here - the right to a tue and the right to its privacy.
1stly, the tue is in essence an exception from the strict anti-doping rules to use a banned substances IF and WHEN a health need is demonstrated. i strongly believe it is thus an important humanitarian principle. curiously, and this is not widely understood if known at all, while the rules have generally became tougher over the years, the use of the tue's has been relaxed. (i encourage everyone to visit the xc ski thread for a good example re. martin sundby's abuse of asthma meds). the problem is that while some indeed use the tue properly, many, if not the majority - particularly at the elite level - have found the ways to misuse it for a performance inhancment in addition to curing their ailments, if any. not good, not normal, not meant by the ideal...
2ndly, the right to privacy is also paramount, again, but it can get and does get abused often enough. call it misused if you will but the invocation often takes place to divert the attention from a questionable prescription in the 1st place.
it is a very sensitive and difficult issue to regulated and balance. including for wada. so, they while increasingly instituting longer banned lists and tougher sanctions, were in fact relaxing some tue rules. again, look no further that the most ubiquitous tue - for asthma.
this make no sense - yelling about a 'zero tolerance' from every roof top whilst rolling back a requirement for a tue if taken salbutamol is LESS THAN 1600 mcg/24 h
wada has to take some blame along with the expected human propensity to cheat.
---edit:
fixed the units in the 2nd to last line