Cannabis’ positive and negative effects

The positive and negative effects of cannabis

Benefits and contraindications of legal cannabis and high thc marijuana

The consequences of marijuana use are largely discussed, as they can be both positive and negative depending on the case. The positive and negative effects of cannabis depend mainly on the quantity, psychophysical state of the consumer and consumption habits. Some people tend to react well to the THC psychoactivity while others develop negative results.

Today we will study both beneficial and side effects given by cannabis intake though making a distinction between high THC content weed and CBD cannabis.

Read also: CBD Oil: Properties, Benefits and Contraindications

Differences between legal and illegal cannabis

In the UK, legal cannabis is called “industrial hemp” for horticulture, cosmetic and food products, environmentally friendly construction and many other uses.

It is a legal product in our country because it is almost entirely free of THC: it contains less than 0.2%. THC is the psychoactive cannabinoid of marijuana and therefore changes perception of reality, mood, and feelings.

On the contrary, CBD (that light cannabis is rich in) is a non-psychotropic cannabinoid that interacts with our body only at the physical and immunological level.

Marijuana with high THC content is illegal in the UK and many other countries worldwide for a particular reason: if we take it, THC changes our bodies both physically and psychologically (we go into more detail in the corresponding section).

However, psychoactive cannabis also has positive effects. It is no coincidence that medical cannabis-based drugs come from THC-rich hemp flowers.

The differences between light cannabis effects and illegal cannabis

Benefits and side effects of cannabis

If you want to know the positive and negative effects of cannabis, you should first read about the beneficial effect.

Here are the beneficial results of marijuana use:

  • Euphoria and happiness
  • Physical and mental relaxation
  • Elevation of sensory perception (in general, the five senses are sharpened: smell, sight, hearing, taste and touch)
  • Munchies – that might be positive in people with a loss of appetite
  • Increased creativity
  • Inhibition, an effect that introverts generally find very positive
  • Pain and anti-inflammatory effects
  • Improved joy

Although not immediately detectable, THC has immunomodulatory effects, thus regulates the immune system’s response and appears to accelerate metabolism.

Instead, here are the potential adverse effects that those who take cannabis may see:

  • Fear
  • Tachycardia
  • Panic attacks
  • Coordination problems
  • Red eyes
  • Dry mouth
  • Concentration difficulties
  • Distorted reality
  • Hallucinations
  • Memory and cognitive problems, even long-term
  • Slowed reflexes
  • Addiction to effects (so it is necessary to take more and more amounts of the substance to get the impact of the first time)
  • Addiction, especially among people who regularly start smoking cannabis at early ages

In addition, in predisposed subjects, continued cannabis use may promote schizophrenia and/or psychosis.

Not everyone experiences these negative effects and some of them, especially anxiety, tachycardias and panic attacks, are not expected (although they are favored by the absorption of high amounts of THC).

Addiction is also not demonstrated by all users. For example, it is improbable that a person who occasionally uses cannabis will become addicted to it while it is more likely to happen if you use habitually, especially during youth.

Read: “Is cannabis addictive: hoax or truth?” Discover unique studies to deepen your knowledge.

The consequences of ingesting weeds with high THC content have nothing to do with the effects of CBD cannabis.

CBD cannabis: beneficial and side effects

As you can read in the “Differences between legal and illegal cannabis” section, CBD weed contains insignificant proportions of THC (less than 0.2%) and generally high percentages of cannabidiol, the so called CBD.

It is precisely the spread of this cannabinoid that determines the positive effects of legal marijuana and derivatives like CBD oil and legal hash:

  • Significant reduction in pain and inflammation, including neurological
  • Muscle relaxation, especially for people with spasticity, but also for people with sleep disorders
  • Reducing the extent and number of epileptic seizures due to the anti-convulsive properties of CBD (here the unique study)
  • Decreased nausea and vomiting

Even if those who use CBD products cannot notice it directly, cannabidiol has immunomodulatory, antioxidant, neuroprotective properties… Besides, it appears to counteract the proliferation of specific cancer cells (studies are underway) only in mouse lab and in vitro testing).

Test tube studies and tests on light hemp

CBD can also have side effects. Here are a few:

  • Fatigue due to solid muscle relaxation
  • Hypotension (for some people, this may be good, for others, it can be harmful)
  • Diarrhea

In some specific cases, for example, during pregnancy and breastfeeding, and in case of heart and/or gastrointestinal illness, it is advisable to contact your doctor before taking CBD in one way or another.

Read also: Do your eyes turn red by using legal weed? Here you’ll find everything you need to know about red eyes and CBD.


Now you know everything about positive and negative effects of legal and illegal cannabis, but you need to know something else: it should not be consumed in the UK. So be careful.

You can continue to buy it (for collection) in the best stores like JustBob.

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