The Science of Cannabis Effects: How It Affects Your Brain and Body

Theresa McNamara

You’ve likely heard of cannabis effects, also known as marijuana. It’s a plant many people use for different reasons. Some might use it for fun. Others might use cannabis effects for health reasons.

But have you ever wondered how it affects your body and brain? Knowing this can help you make better choices about cannabis effects . Let’s dive in and learn more about the science of cannabis in a simple and easy way.

What is Cannabis?

Cannabis is a plant that grows in many parts of the world. It’s also known as marijuana. Another kind of cannabis plant is called hemp.

People use cannabis in different forms. Some might smoke it. Others might eat it in foods or use it as oil. There are things in cannabis called active compounds. The main ones are THC and CBD. These compounds cause the effects that you feel when you use cannabis.

How Cannabis Interacts with the Brain

Have you ever wondered how cannabis affects your brain? It’s all about a special part of your body called the endocannabinoid system. 

The endocannabinoid system is a part of your body that helps control many functions. It’s like a set of keys and locks that control how your body works. It helps with things like mood, memory, and sleep.

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How Cannabis Connects with Your Brain

Cannabis has things called cannabinoids. Think of these as special keys. These keys can fit into locks in your brain and body, called receptors. When these keys fit into the locks, it changes how the locks work. This is how cannabis can make you feel different.

Cannabis Effects on the Brain

One of the main keys in cannabis is called THC. When THC gets into your brain, it can make you feel very happy. This feeling is often called “euphoria”. But THC can also make it hard to remember things. That’s why some people may forget things when they use cannabis.

How CBD Influences the Brain

Another key in cannabis is called CBD. This key doesn’t make you feel high or happy. But it can help reduce feelings of worry or stress. This is why some people use CBD to feel more calm. CBD might also help with other health issues. Some people use it to help with pain or to get better sleep. But more research is needed to know for sure.

Short-Term Effects Of Cannabis On Your Body

Cannabis doesn’t only affect your brain. It can also change how your body works. Let’s look at how this happens.

Immediate Physical Effects

After you use cannabis, your body might feel different. You could notice that your heart is beating faster. This is because cannabis can make your heart work harder.

Your eyes might also become red. This happens because cannabis makes blood vessels in your eyes expand.

If you smoke cannabis, it can affect your lungs too. Just like tobacco smoke, cannabis smoke can irritate your lungs and throat.

Changes in Coordination and Movement

Cannabis can also change how you move. It might make you feel clumsy or unsteady. That’s because it affects the parts of your brain that control how you move. This is why it’s not safe to drive or operate heavy machinery after using cannabis.

Altered Perception of Time and Senses

Have you ever noticed how time seems to slow down when you’re using cannabis? This is a common effect. Cannabis can change how you perceive time. It might seem like time is going by very slowly.

Your senses might also become more intense. Things might seem brighter or louder. Food might taste better. These changes are because cannabis can heighten your senses.

Long-Term Effects of Cannabis Use

You might be wondering if using cannabis for a long time can change your body or brain. The answer is yes, it can. Let’s see how.

Chronic Use and Potential Risks

Using cannabis often for a long time can put your health at risk. If you smoke it, it might damage your lungs. Just like cigarette smoking, this could lead to problems like coughing and lung infections.

It can also affect your heart. Remember how we talked about cannabis making your heart beat faster? Over time, this could make it harder for your heart to do its job.

Addiction and Dependency

Cannabis can also be addictive. This means that your body might start to need it to feel normal. If you try to stop using it, you might feel very uncomfortable. This is called withdrawal.

Impact on Mental Health

Using cannabis for a long time might also change how you feel. Some people might start to feel very anxious or sad. Others might find it hard to think clearly or to remember things.

In some cases, cannabis can even cause a mental health problem called psychosis. This is when you start to see or hear things that aren’t really there. It can be very scary.

Medical Applications of Cannabis

While cannabis can have some risks, it can also be used for good. Some people use cannabis as a medicine. Let’s learn how.

Therapeutic Uses of Cannabis

Cannabis can be used to treat different health problems. Some people use it for pain relief. Others might use it to help them sleep better or to improve their appetite.

CBD-based Treatments

Remember CBD, the key in cannabis that can make you feel calm? It can also be used as a medicine. It has been used to treat a serious type of epilepsy. It might also help with other conditions, but more research is needed.

Ongoing Research and Future Uses

Scientists are studying cannabis to find other ways it might help us. They are trying to understand it better. In the future, cannabis might be used to treat more health problems.

The Potential Benefits of Cannabis

Cannabis isn’t just something that people use for fun. It can also have benefits for your health. Let’s talk about some of them.

  • Pain relief: One of the most well-known benefits of cannabis effects is its ability to provide pain relief. Many individuals use it to alleviate chronic pain caused by conditions like arthritis or back injuries.
  • Nausea and vomiting: Cannabis has shown effectiveness in reducing nausea and vomiting, particularly in individuals undergoing cancer treatments such as chemotherapy.
  • Increased appetite: Cannabis can stimulate appetite, which can be beneficial for individuals experiencing a loss of appetite due to illness or medical treatments.
  • Epilepsy treatment: CBD, a compound found in cannabis effects , has demonstrated promising results in treating certain types of epilepsy, reducing the frequency and severity of seizures.
  • Sleep improvement: Some individuals find that cannabis helps them achieve better sleep quality, aiding those struggling with insomnia or sleep disturbances.

The Potential Risks of Cannabis

Using cannabis can also have downsides. Let’s look at some of the risks.

  • Lung health: Smoking cannabis effects can have negative effects on lung health, similar to smoking tobacco. It can cause respiratory issues and increase the risk of lung infections and chronic bronchitis.
  • Mental health effects: While cannabis effects can have a relaxing effect on some individuals, it can also induce anxiety, and paranoia, or worsen symptoms of pre-existing mental health conditions such as depression and anxiety disorders.
  • Cannabis use disorder: Some people may develop a dependency on cannabis effects , where its use becomes a central focus in their lives, leading to difficulties in controlling its consumption and interfering with daily functioning.
  • Brain development: Heavy cannabis effects use during adolescence, a critical period for brain development, can impact cognitive function, memory, attention, and overall brain structure.
  • Psychosis: In susceptible individuals, particularly those with a family history of psychotic disorders, excessive cannabis effects use can increase the risk of developing or exacerbating symptoms of psychosis, such as hallucinations or delusions.

Responsible Use and Legal Considerations

Using cannabis comes with responsibilities and legal considerations. Let’s explore them further.

Importance of Responsible Cannabis Use

It’s crucial to use cannabis responsibly. This means using it in moderation, understanding its effects, and being aware of potential risks. Responsible use involves considering the context and environment in which you consume cannabis effects, especially if you’re around others.

Potential Consequences of Misuse or Illegal Activities

Misuse or engaging in illegal activities related to cannabis can have serious consequences. This includes driving under the influence of cannabis, distributing or selling cannabis illegally, or using cannabis in areas where it is prohibited. 

Legal penalties can range from fines to imprisonment, depending on the jurisdiction. Additionally, irresponsible use of cannabis effects can negatively impact your health, relationships, and overall well-being.


Cannabis effects your brain and body in various ways. It interacts with the endocannabinoid system, immediately and has long-term effects, potential benefits, and risks.

Research on cannabis effects is ongoing, and our understanding continues to evolve. It’s important to make informed decisions, considering the potential benefits, legal regulations, and using cannabis responsibly.

Stay informed about the latest research, prioritize well-being, and make choices that promote safety and informed decision-making. By being mindful and responsible, you can navigate the world of cannabis effects wisely.