What Happens If You Smoke Marijuana?
Reactions with pot can vary widely
Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital.
Sean Gallup Collection / Getty Images News
The reaction you may have when trying marijuana can vary dramatically based on many factors. Some people report not feeling anything at all when they smoke marijuana. In other cases, people report feeling relaxed or “high.”
Some people who use marijuana report having sudden feelings of anxiety and paranoid thoughts and that might be caused by trying a higher potency marijuana, according to the National Institute on Drug Abuse.
Research also shows that regular use of marijuana is linked to an increased risk of depression, anxiety and a loss of motivation or drive. You may feel “dopey” on the drug, which is when you begin to lose interest in activities that you might have previously enjoyed or you may lose the ability to grasp concepts easily.
Short-Term Discomforts of Using Weed
The effects of using marijuana can be unpredictable, especially when it is mixed with other drugs, research shows. You may feel relaxed on the drug, but other things you might not be expecting with pot use can include rapid heart rate and other unpleasantries.
- Dry mouth
- Swollen eyelids
- Bloodshot eyes
- Loss of coordination
- Accelerated heart rate
As with any drug or substance that can alter perception, logic and usual behavior, there are several short-term hazards of using marijuana from impairing driving abilities to memory loss.
- Learning difficulties
- Lack of attention and focus
- Poor driving skills
- Anxiety and paranoia
- Impaired memory
- Difficulty in thinking
Any drug that is taken over a prolonged period of time can have an effect on your health. Several of the physical barriers that can occur range from infertility problems to overall brain functions.
- An increased risk of developing lung, head, and neck cancers
- Lack of motivation
- Decreased sperm count in men
- Irregular menstruation in women
- Respiratory problems
- Heightened risk of infections, especially the lungs
- Poor short-term memory recall
- Inability to shift attention normally
- Inability to understand complex information
The National Institute on Drug Abuse reports that marijuana can affect each person differently according to their own body chemistry and the type of pot used. Some people can use weed and never have any negative reactions while others may try it and get entirely freaked out by the experience.
- Your biology (genetic makeup)
- Marijuana’s strength (amount of active ingredient THC)
- Previous experience with the drug
- How it’s taken (smoked versus ingested)
- Whether alcohol or other drugs are taken too
Not Your Grandfather’s Pot
Studies have found that the marijuana available today is much different in terms of potency compared to what was generally available in the 1960s when the use of the drug became widespread in the United States.
Today’s strains of the plant contain much more of the active ingredient in marijuana: tetrahydrocannabinol or THC, researchers say. That makes today’s weed much more potent than that smoked by the hippies and flower children of the Woodstock generation.
How marijuana affects the individual user depends on many different factors, including body chemistry and the potency of the drug.
Sensation of a Marijuana High: Smoking, Edibles, and Vaping
Smoking, ingesting, or vaping marijuana can make you high or “stoned.” If you’ve never tried marijuana, you might wonder what it feels like.
Marijuana can have drastically different effects from one person to the next. Some people report feeling happy or relaxed. Others report laughter, altered time and sensory perception, and increased appetite. But marijuana can also cause less-desirable effects.
Keep in mind that marijuana is still illegal in most states. In others, it’s only legal with a prescription. You should only use marijuana when it’s legal.
Marijuana affects each person differently. Some people are very sensitive to marijuana’s effects, while others might not notice them as much.
How you react to marijuana depends on a number of factors, including:
- the dose, strain, and potency
- whether you smoke, vape, or ingest it
- how often you use marijuana
- your age, gender, and physiology
- whether you drink alcohol or take other drugs at the same time
While high on marijuana, you might feel:
- more sensitive to light, color, sound, touch, taste, and smell
However, marijuana use can also lead to unpleasant feelings or experiences. These include:
- delusions and hallucinations
- high blood pressure
- nausea and vomiting
- racing heartbeat
Negative reactions are more likely when you’re inexperienced or take too much. Strong cannabis can trigger a stronger reaction.
Stages of being high
The active ingredient in marijuana is THC (delta-9-tetrahydrocannabinol). When you smoke or vape marijuana, THC enters your bloodstream via your lungs. Its concentration in the blood peaks within minutes. Eventually, THC is broken down and excreted in urine and stool.
Since your blood concentration of THC changes over time, it’s possible to experience different stages of being high. For example, feelings of euphoria tend to peak sometime after blood concentration of THC has peaked.
More research needs to be done to understand whether the effects of marijuana change over time.
Do different strains cause different highs?
Strains are different breeds of the cannabis plant. There are three main strains of marijuana: indica, sativa, and hybrids.
Users associate indica strains with relaxation, while sativa strains are believed to produce a more active, physical high. Hybrid strains are thought to combine the effects of both indica and sativa strains.
However, these differences in high are not scientifically proven. In addition, some researchers believe they’re unfounded.
According to a 2016 interview with Dr. Ethan Russo, an expert on the human endocannabinoid system, “One cannot in any way currently guess the biochemical content of a given cannabis plant based on its height, branching, or leaf morphology.”
He also stated that: “The differences in observed effects of cannabis are then due to their terpenoid content.” Terpenoids are a substantial group of organic compounds found in plants. They can have a wide variety of effects in humans.
Are the munchies real?
The “munchies” are a scientifically supported effect of marijuana. There’s likely more than one mechanism behind them.
THC affects brain areas that control appetite. It may also increase ghrelin, a hormone associated with hunger. Finally, THC enhances smell and taste, which can cause you to start or continue eating.
Vaping marijuana is different from smoking marijuana. When you vape, you are inhaling vapor instead of smoke.
Vaping releases higher concentrations of marijuana’s active ingredients than other methods. As a result, vaping can produce a stronger high.
As with smoking, you should feel the effects of vaping right away. These effects can last up to four hours .
Results from a 2018 study indicated that vaporizing cannabis produced higher blood THC concentrations and stronger effects than smoking the same amount.
Ingesting marijuana, whether in tinctures, sprays, or food and drink, leads to a different high than smoking. Theoretically, the effects are less intense, as THC is released into the bloodstream over a longer period of time.
For example, in a 2017 study that compared the effects of smoking, vaporizing, and ingesting cannabis, users reported weaker drug effects when cannabis was ingested.
However, there are anecdotal reports of edibles producing a strong and sometimes debilitating high. This might be due to the dose.
Other sources suggest that when ingested, THC reaches the liver faster, where it’s broken down into another psychoactive compound. The high might change depending on the concentration and ratios of THC and its metabolites in the bloodstream. More research needs to be done to understand these differences.
It can take between 30 and 90 minutes before you start to feel the effects of marijuana edibles. Edible highs tend to last longer than a smoking or vaping high. The effects are typically gone within 24 hours .
The duration of a marijuana high depends on a variety of different factors, including the dose and potency. In addition, how you consume marijuana can drastically affect how long you feel high.
A 2017 review identified the following times for the onset, peak, and total duration of a marijuana high.
|Smoking and vaping||Within minutes||20 to 30 minutes||2 to 3 hours|
|Edibles||30 to 90 minutes||3 hours||Within 24 hours|
Keep in mind that other differences, such as whether you smoke marijuana using a bong or a joint, can also affect how long the high lasts.
A marijuana high is associated with feelings of relaxation and contentment, though negative reactions are also possible. Learn about what the sensations feel like.