The suspected Russian hack of the medical records of several dozen Olympic athletes this week revealed no wrong-doing or illegal doping activity, but it did reveal one controversial fact: a lot of athletes say they have asthma.

That’s because this claim of exercise-induced asthma allows athletes to obtain a special “therapeutic use exemption” or TUE from international sporting agencies, such as the International Olympic Committee.

Some athletes do have asthma and are taking medications to return to normal. For others, it’s a case of taking a legal advantage to obtain drugs that others are already using.

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