Quote (Sgull @ Mar 5 2009 - 02:35:30)
caffeine is a drug, as it inhibits pathways in your brain
alcohol is a drug, as it inhibits pathways in your brain
nicotine is a drug, as it inhibits pathways in your brain
TLC is a drug, as it inhibits pathways in your brain
etc
etc
etc
you could make the debate that oxygen is a drug
a drug is defined as a non-food substance that alters your state of mind
i think it's safe to assume that the intake of oxygen is pretty natural, and can be considered the "norm" that a drug would alter (not so much how we breathe, etc, but you get the idea)