Marijuana and sex is a topic plenty of adults are curious about, and a growing body of research has tried to answer it. The short version: some people report more desire and enjoyment, others report the opposite, and dose seems to make a big difference. This guide covers what studies found, where they fall short, and how to explore with consent and communication at the center.
What people report
Most of what's known about cannabis and intimacy comes from surveys that ask people to describe their own experiences.
In a 2019 online survey of 216 adults who had used cannabis around sex, 38.7% said sex was better and 24.5% said it was sometimes better. Another 16% said it was better in some ways and worse in others, and only 4.7% said it was worse. Most reported more desire, greater sensitivity to touch and an easier time relaxing. Others found that cannabis made them sleepy or less focused, or that it made no difference at all.
A separate 2019 survey of 373 women at a gynecology practice found that about a third had used cannabis before sex. Most of those women reported more desire and more satisfying orgasms, with no change in lubrication.
These are self-reports from people who chose to answer, so they describe experiences rather than prove effects.
The science: the endocannabinoid system, arousal and anxiety
Your body makes its own cannabinoid-like messengers as part of the endocannabinoid system, a signaling network involved in mood, stress, appetite and more. Researchers have long suspected it plays a role in sexual response. For a deeper look, read our endocannabinoid system explainer.
The picture is more complicated than "cannabis turns it up." In a small 2012 study of 21 women, rising arousal while watching an erotic film went along with falling levels of the body's own endocannabinoids. That suggests the system is involved, though not in a simple, more-is-better way.
Anxiety is the other half of the story. Some people say a little THC eases self-consciousness and helps them stay present. Others find that THC, especially at higher doses, brings racing thoughts or worry, which is the opposite of what intimacy needs.
Marijuana and sex: what studies found, and their limits
The best-known study drew on a large national survey. In 2017, Stanford researchers analyzed answers from more than 50,000 adults in the National Survey of Family Growth. Women who used cannabis monthly, weekly or daily, and men who used it weekly or daily, reported having sex more often in the previous four weeks than people who had never used it. The pattern held across demographic groups.
Not every finding points the same way. A 2019 analysis pooled five studies covering 3,395 men. Erectile dysfunction was roughly twice as common among men who smoked cannabis as among those who didn't. The studies varied widely, and the authors called for longer-term research to sort out cause and effect.
Keep these limits in mind:
- Association isn't causation. People who use cannabis may differ from people who don't in many other ways.
- Most data are self-reported. Surveys rely on memory and candor, and volunteers may be enthusiasts.
- Heavy users are overrepresented. In the 2019 online survey, more than a third of participants used cannabis daily.
- Dose and product are rarely measured. Few studies record how much THC people took, or in what form.
- Snapshots, not timelines. The national survey captured a single point in time, and it measured how often people had sex, not how good it was.
What's missing are controlled trials that give people measured doses and track sexual function over time. Until those exist, the research describes patterns and personal reports, not reliable effects.
Dosing: less is more
If one finding holds up across the research, it's that dose matters. A 2020 review of 12 human and 8 animal studies looked at cannabinoids and female sexual function. It found dose-dependent effects on desire: low doses generally helped or did nothing, while high doses got in the way. The human data came mainly from questionnaires, so even this pattern needs more study.
That matches what many people describe about THC and libido: a small amount can feel relaxing and sensory, while too much can leave you foggy, anxious or sleepy.
- Go lower than usual. Start with the smallest amount you'd use on any evening, or less.
- Try it solo first. Learn how a product affects you before bringing it into a shared moment.
- Wait for the full effect before you decide on more.
- Keep notes on the product, the amount and how it went.
Tolerance changes the math, too. Someone who uses cannabis daily may need more to feel anything, while an occasional consumer can feel a small dose strongly. Partners rarely share the same tolerance, so each person should dose for themselves.
Our THC dosage guide and our look at microdosing THC and CBD cover low-dose strategies in more detail.
Choosing formats and profiles
- Inhaled cannabis, from flower or a vape, is felt within minutes and fades within a few hours, so it's easier to adjust a little at a time.
- Edibles are slower and last longer. If you're considering edibles for date night, take them well ahead of time and never add more while you wait. A late-arriving edible can turn a planned evening into a sleepy one.
- Drinks behave much like edibles, and timing varies from product to product.
- Lower-THC or balanced products, with similar amounts of THC and CBD, keep the THC dose down and the experience easier to manage.
Setting the mood
- Pick a comfortable, private space where you won't be interrupted.
- Choose a relaxed night. Effects can linger, so an evening without early plans the next morning works best.
- Keep water nearby. Dry mouth is a common side effect of cannabis.
- Have a light snack ready, and skip a heavy meal right beforehand.
- Leave alcohol out of it. Adding it to cannabis raises the odds of feeling more impaired than you planned.
- Plan protection and anything else you'll need ahead of time, while you're thinking clearly.
Communication and consent
Cannabis should never be a shortcut around a conversation. Talk before anyone consumes: whether you both want to try it, how much, and what you'd like to do or avoid.
- Consent comes first, and it's ongoing. Either of you can change your mind at any point.
- Set boundaries while you're both sober. Decide on limits before cannabis is involved.
- Stop if either of you is too impaired to make clear choices. Someone who's too high can't meaningfully consent.
- Never give cannabis to anyone without their clear knowledge and agreement, including in food or drinks.
- Check in during and after. A simple "how are you feeling?" keeps you both comfortable.
- Have a plan B. Agree on what you'll do if either of you feels too high or simply isn't into it: slow down, switch to something low-key, drink some water and rest. Our guide to easing an uncomfortable high has more steps.
Deciding that cannabis isn't part of your intimate life is a perfectly good outcome, too. Cannabis is for consenting adults 21 and older.
THC vs. CBD in intimacy
THC is the intoxicating cannabinoid, and it drives most of the effects people describe, good and bad. CBD isn't intoxicating, and little research has looked at CBD and arousal specifically. Some people choose balanced THC and CBD products hoping for a gentler experience, but that idea hasn't been tested in intimate settings. Our guide to CBD vs. THC explains how the two differ.
Beyond indica vs. sativa: terpenes and personal response
You'll find lists of the best strains for intimacy online, but neither strain names nor indica and sativa labels are reliable guides. The labels don't reliably reflect a plant's genetics or chemistry, and two people can react very differently to the same product.
Terpenes offer a better way to describe what you enjoy. If a citrusy or floral aroma appeals to you, look for limonene or linalool on the terpene panel. Keep expectations modest, though: terpenes shape aroma and flavor, and claims about specific effects go beyond the evidence. Our guide to cannabis terpenes has more.
Your own body has the last word. If you have ongoing concerns about desire, arousal or sexual function, take medications, or are pregnant or trying to conceive, talk to a clinician. Changes in libido can have many causes, and cannabis isn't a fix for any of them.
