Not really.
MANY DQ conditions are utter garbage. Requiring prescription eyedrops can DQ you. Having your last asthma attack at 13 instead of 12 DQs you. A headache that once required prescription meds can DQ you.
People lie about everything from past hospitalizations, to past mental illnesses. Its a risk many people today think is worth taking because they either join the military or they have no job or college prospects.
Yeah, if you're an active drug addict you'll probably be caught and dumped, but past drug use? Past medical history? Do a simple internet search and you'll find thousands finding out how to evade that- sometimes on the advice of their recruiter!
