by the yes man
Thanks to Mythbusters, we know that eating a couple poppy seed-laced bagels really can make you look like a heroin fiend, at least as far as a standard drug test is concerned. That makes sense. Heroin is derived from morphine, which is itself derived from poppies. So there’s a chemical family tree that’s fairly easy to follow.
At the I Can Has Science blog, however, they’ve taken the standard question—”Will poppy seed bagels make me look like a stoner?”—and turned it around. “Can poppy seeds get me stoned?” (From a purely theoretical, chemistry thought-experiment perspective, of course.) The question turns out to be more valid than you might suspect. We’re not talking about dried banana peels, here.
The upshot is that you’d have to eat 40-120 grams of poppy seeds to get a medically relevant dose of morphine. Sounds like a lot but it could be ingested by eating a single Bundt cake:
However, this delicious looking cake recipe calls for an entire cup of poppy seeds, or approximately equal to 128 grams! Granted, the recipe yields 10 to 12 servings, but one would only have to eat 3 or 4 slices of this Bundt cake to get up to a full prescription dose of morphine! (If the most potent poppy seeds were used.)
Just don’t do any heavy lifting or driving afterwards. And since loss of appetite is a symptom of morphine use, this would be a hard way to really get addicted.