I think the answer is proactive
Include core element specified by HIPPA
No i dont think so precautions are needed sometimes
it could effect you because you could have one of the best times of your life!! but in all jokes aside most substances are unsafe to use and or addictive, however is you use non addictive safe drugs like lsd or weed you should be fine however i dont recommend it considering its illegal.
Maybe it was influential, maybe it was peer pressure, maybe it was the need to fit in... there are multiple reason of why teens would want to do drugs or may be at a greater risk of doing drugs.