What Are the Effects of Cannabis on the Human Body?

Talking about the effects of cannabis on the human body means delving into a universe that is as diverse as it is fascinating, where personal experience and science intertwine with every puff, drop, or bite. For some, cannabis is synonymous with boundless creativity or shared laughter; for others, it represents calm moments after a hectic day, or relief from persistent pain. But what is really behind these sensations? How can the same plant produce such different effects depending on the variety, dosage, or even the time of day?

Understanding the effects of cannabis is essential for responsible use, whether you are seeking a strong recreational experience, a therapeutic goal, or simply a moment of relaxation. But before we get into the specific effects of marijuana, it’s important to highlight that the experience of cannabis is determined by multiple factors.

The plant’s genetics undoubtedly plays a central role: a sativa strain, for instance, tends to produce more energising and mental effects, whereas an indica is more likely to induce physical relaxation and drowsiness. However, this classification is far too simplistic for a plant that has been evolving alongside humanity for at least 12,000 years. Therefore, it’s important that we fully understand how to define these effects.

The ratio of cannabinoids like THC (tetrahydrocannabinol) and CBD (cannabidiol) also has a major influence. These are primarily responsible for most of the effects experienced by users, although other minor cannabinoids (like CBN or cbg) and terpenes also play a significant role.

These aromatic compounds (such as myrcene, limonene, or linalool) also modulate the experience, adding nuances that can enhance relaxation, euphoria, or mental clarity. This phenomenon, known as the “entourage effect”, has been widely documented and explains why some strains produce deep relaxation while others are more stimulating.

And if we add to the equation the method of consumption (smoking, vaping, or ingesting) and the individual characteristics of the user (such as tolerance level, metabolism, or emotional state), we end up with a melting pot of factors that together determine how cannabis can affect different people in different ways, even when they’ve consumed the same amount at the same time.

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Cannabis with High THC Content

THC is the main psychoactive compound found in cannabis and one of the most studied. Strains of cannabis with high THC content tend to deliver an intense experience, characterised by enhanced mood, feelings of euphoria and wellbeing, heightened sensory perception, and, in many cases, an altered perception of time and space. These strains are highly valued by recreational users as well as by patients seeking relief from symptoms such as chronic pain, lack of appetite, or insomnia.

However, cannabis with high THC content is not without risk. In high doses or in individuals with low tolerance, it can induce anxiety, paranoia, or an increased heart rate. Therefore, it is crucial to start with low doses and monitor how your body responds. The THC levels of strains like RS11, Oreoz USA, and Colombian Jack easily exceed 25%, so they should be reserved for experienced users or for recreational settings where a powerful effect is sought.

Cannabis with High CBD Content

On the other hand, CBD has gained huge popularity thanks to its therapeutic potential and its ability to modulate the adverse effects of THC, such as paranoia or tachycardia. Unlike THC, CBD does not produce a psychoactive high, but it does positively influence mood and overall wellbeing. Many people use it because it can reduce anxiety and stress, relieve muscle or joint pain (thanks to its anti-inflammatory and analgesic properties), help with sleep, or even help to control certain forms of epilepsy and spasms.

Strains of cannabis with high CBD content can contain concentrations of this cannabinoid above 10% while maintaining very low THC levels, so they’re ideal for those seeking the benefits of cannabis but without any of its psychoactive effects. Strains such as BCN Diesel CBD, Swiss Dream Rosé Auto CBD, and Swiss Dream CBD are good examples. These are also widely used by older people or by beginners looking for a mild, functional effect that’s suitable for daily use as it doesn’t compromise their mental performance.

Cannabis Seeds with Relaxing Effects

Among the wide range of possible effects of cannabis, relaxation is one of the most sought-after, especially by those suffering from chronic stress, anxiety, or sleep disorders. Cannabis seeds with relaxing effects can have different chemical profiles: some belong to the “cannabis with high CBD content” category; others combine THC and CBD in balanced proportions; and others owe their effect to a rich concentration of sedative terpenes such as myrcene or linalool.

These strains are designed to help users unwind from the fast pace of daily life. Their effect typically begins with a sensation of physical relief, followed by mental calm that promotes rest and introspection. They are ideal for consumption at night, before bedtime, or during moments of relaxation. Among the best-known strains with this profile are cbg Auto, CBDV Auto, and Kama Kush CBD. All of them deliver a pleasant and smooth experience which is perfect for those looking to relax without losing control.

Effects of Cannabis According to the Method of Consumption

The way cannabis is consumed significantly affects the intensity, duration, and type of effects experienced, as each method of administration has particular characteristics that may be better suited to different contexts and needs.

When cannabis is smoked, the effects of THC on the body usually appear within minutes, reaching their peak after 15 – 30 minutes. This method provides a fast onset and more direct control over the dose, but the effects are relatively short-lived, lasting between one and three hours. What’s more, combustion involves inhaling compounds that may irritate the respiratory tract.

Vaping is a healthier alternative. With this method, cannabis is heated but not burnt, allowing cannabinoids and terpenes to be released without producing as many harmful by-products. In terms of onset and duration, effects are similar to those experienced when cannabis is smoked, although they are often cleaner and more defined.

Conversely, oral consumption (via edibles or ingested oils) follows a very different dynamic. Effects can take between 30 minutes and two hours to manifest but tend to be more intense and longer-lasting, often lasting between four and eight hours or even longer. This is because ingested THC is processed by the liver, where it becomes 11-hydroxy-THC, a more potent and longer-acting metabolite. For this reason, it’s crucial to start with low doses and be patient to avoid an overly intense experience.

Effects of Cannabis in Different People and Contexts

Everyone reacts differently to cannabis, and understanding how individual characteristics influence the experience is key to enjoying it safely and pleasantly. One of the most important factors is tolerance: regular users tend to need higher doses to achieve the same effects as someone with little or no experience. Tolerance can develop over time and affects both the psychoactive and therapeutic effects of cannabis.

Metabolism also plays an important role. Some people metabolise cannabinoids faster than others, leading to shorter-lasting effects, whereas those with a slower metabolism may experience longer or more intense effects, especially when cannabis is consumed orally.

The emotional and mental state at the time of use is another key factor. Using cannabis in a stressful environment or with a negative mood can increase the risk of experiencing anxiety or paranoia, especially with THC-rich strains. On the contrary, using it in a comfortable and relaxed setting, with a positive mindset, is more likely to produce pleasant and beneficial effects.

Other factors such as body weight, recent meals, or even individual genetics can also influence how each person processes cannabinoids. Therefore, it is always advisable to start with low doses, especially when trying a new strain or an unfamiliar method of consumption, and adjust the dose gradually according to your personal response.

A Swiss Army Knife for Everyday Life

Cannabis continues to challenge stereotypes and prejudices as science advances and reveals the complexity of its effects. Beyond the dichotomy between its psychoactive and relaxing effects, the plant is becoming a versatile ally for both wellbeing and medical research. Nowadays, choosing between cannabis with high THC content, cannabis with high CBD content, or Cannabis seeds with relaxing effects is almost like selecting a precise tool for each need, moment, and individual.

The key lies in conscious and responsible exploration: cannabis is not a universal experience but a personal journey where genetics, chemistry, and purpose are intertwined. With the rise of personalised genetics and accessible information, consumers now have the opportunity to design their own path — whether they’re seeking creative inspiration, physical relief, or simply a break from daily routine. And this consolidates cannabis not just as a plant, but as a universe of possibilities waiting to be explored.

Frequently Asked Questions about the Effects of Cannabis on the Human Body

What happens if I smoke cannabis every day?

Daily cannabis use can lead to tolerance, meaning the effects diminish over time. It may affect short-term memory, motivation, or mood, and long-term use can result in psychological dependence. However, the impact varies depending on individual factors and dosage.

What are the effects of cannabis on the human body?

Cannabis can produce effects such as euphoria, increased appetite, relaxation, sensory alterations, and drowsiness. These depend on the cannabinoid profile (like THC and CBD), the plant variety, dosage, and context of use.

How long do the effects of cannabis last?

It depends on the method of consumption. Smoking or vaping leads to effects within minutes, lasting 1 to 3 hours. Edibles take 30 minutes to 2 hours to kick in, but their effects can last 4 to 8 hours or more.

Is it dangerous to smoke cannabis?

Smoking cannabis is not usually fatal but may irritate the airways and trigger anxiety, paranoia, or tachycardia in sensitive users. Chronic use at an early age may affect cognitive development. Moderate, informed use is recommended.

Which is worse: alcohol or cannabis?

Both have risks, but alcohol is linked to higher mortality and physical addiction. Cannabis has lower acute toxicity but can cause psychological dependency. Overall, alcohol poses greater public health risks.

What does cannabis feel like?

Cannabis can induce sensations of well-being, laughter, creativity, or introspection, but also drowsiness, anxiety, or time distortion. Effects vary by strain, dosage, and emotional state at the time of use.