Originally appeared in The Oprah Magazine, written by Rachel Jacoby Zoldan.
Here’s the tea on CBD, THC, and the plant formerly known as marijuana.
You can smoke it, vape it, sip it, or spritz it. You can bake it into brownies. You can find it in lotions and potions to rub on your skin, tinctures to drop under your tongue, capsules to swallow, or oils that have been added to your latte or ice cream. Cannabis is everywhere these days, and to hear its proponents talk, it’s the fix for everything that might ail you. But is it? And do you need a degree in medicinal plant studies (yes, that exists) to know your CBD from your THC?
What exactly is cannabis?
The cannabis plant contains more than 100 chemical compounds, known as cannabinoids, some of which can affect how we feel and think. The most famous are tetrahydrocannabinol (THC), which produces a euphoric feeling and alters sensory perception, and cannabidiol (CBD), which is non-intoxicating but may be potent in other ways. Both hemp and marijuana are varieties of cannabis, but hemp has a very low concentration of THC, while marijuana’s is, no pun intended, much higher. The type and amount of cannabinoids in any given plant vary widely depending on the plant’s strain and how it’s grown; they help determine whether a cannabis product will perk you up, settle you down, or land you somewhere in between.
How do you consume cannabis?
Smoking pot leads to an almost- immediate high; in edible form, effects are delayed for 30 minutes to an hour but may be more intense, longer lasting, and, in some cases—especially if you overindulge—decidedly unpleasant (nausea, paranoia, even hallucinations).
Of course, cannabis has the potential to do much more than alter your consciousness. Yet because the plant’s longtime illegal status (see “Canna-Busted?,” right) stunted medical research, there’s still a lot to learn about its effectiveness. We’ve rounded up some of the most common cannabis claims to see which are solid and which may be as wispy as smoke.
Does cannabis actually relieve chronic pain?
The facts: When no less an authority than the National Academies of Sciences, Engineering, and Medicine (nasem) released a 2017 report reviewing the health effects of cannabis, it included evidence to validate the plant’s efficacy in treating several health conditions; chronic pain was in the top three.
A comprehensive review published in JAMA in 2015, analyzing 79 trials with 6,462 patients, found evidence that cannabis worked for chronic pain—which is “encouraging,” says Raphael Mechoulam, PhD, head of the medicinal chemistry lab at Hebrew University of Jerusalem and one of the world’s foremost cannabis researchers.