Webb Therapy Uncategorized How does methamphetamine (aka. crystal meth) affect the brain?

How does methamphetamine (aka. crystal meth) affect the brain?

To answer that question, I’ll need to explain a part of the brain called the Limbic System.

Within the brain there is a set of structures called the limbic system. There are several important structures within the limbic system: the amygdala, hippocampus, thalamus, hypothalamus, basal ganglia, and cingulate gyrus. The limbic system is among the oldest parts of the brain in evolutionary terms. It’s not just found in humans and other mammals, but also fish, amphibians, and reptiles.

The limbic system is the part of the brain involved in our behavioural and emotional responses, especially when it comes to behaviours we need for survival: feeding, reproduction and caring for our young, and fight or flight responses (https://qbi.uq.edu.au/brain/brain-anatomy/limbic-system).

The limbic system contains the brain’s reward circuit or pathway. The reward circuit links together several brain structures that control and regulate our ability to feel pleasure (or “reward”). The sensation of pleasure or reward motivates us to repeat behaviours. When the reward circuit is activated, each individual neuron (nerve cell) in the circuit relays electrical and chemical signals.

In a healthy world without addictive manufactured drugs, humans survive and thrive when they are rewarded for certain behaviours (cleaning, hard work, sex, eating, achieving goals etc), hence evolution has provided us with this feel-good chemical so that we will repeat pleasurable behaviours.

There is a gap between neurons called the synapse. Neurons communicate with each other by sending an electro-chemical signal from one neuron (pre-synaptic neuron) to the next (post-synaptic neuron). In the reward circuit, neurons release several neurotransmitters (chemical messengers). One of these is called dopamine. Released dopamine molecules travel across the synapse and link up with proteins called dopamine receptors on the surface of the post-synaptic neuron (the receiving nerve cell). When the dopamine binds to the dopamine receptor, it causes proteins attached to the interior part of the post-synaptic neuron to carry the signal onward within the cell. Some dopamine will re-enter the pre-synaptic nerve cell via dopamine transporters, and it can be re-released.

When a reward is encountered, the pre-synaptic nerve cell (neuron) releases a large amount of dopamine in a rapid burst. Dopamine transporters will remove “excessive” amounts of dopamine naturally within the limbic system. Dopamine surges like this help the brain to learn and adapt to a complex social and physical world.

Drugs like methamphetamine (a stimulant drug) are able to “hijack” this process contributing to behaviours which can be considered unnatural or potentially dysfunctional. A range of consequences can follow.

When someone uses methamphetamine, the drug quickly enters the brain, depending on how the drug is administered. Nevertheless, meth or ice is quick acting. Meth blocks the re-entry of dopamine back into the pre-synaptic neuron – which is not what happens naturally. This is also what cocaine does to the brain. However, unlike cocaine, higher doses of meth increase the release of dopamine from the presynaptic neuron leading to a significantly greater amount of dopamine within the synapse. Higher doses of cocaine will not release “more dopamine” from the pre-synaptic neuron like meth does. This is why after about 30 minutes or so, people who use cocaine will need more to maintain the high.

Dopamine gets trapped in the synapse (space between nerve cells) because the meth (like cocaine) prevents “transporters” from removing it back into the cell it came from. The postsynaptic cell is activated to dangerously high levels as it absorbs so much dopamine over a long period of time. The person using meth experiences powerful feelings of euphoria, increased energy, wakefulness, physical activity, and a decreased appetite.

When an unnatural amount of dopamine floods the limbic system like this over a long period of time, without reabsorption, then our brain is not replenished with dopamine, hence people who use meth often (even on a single occasion) may feel unmotivated, depressed, joyless, and/or pointlessness when they stop using. Figuratively speaking, the brain is “empty” or low on dopamine fuel, and it will take time to for dopamine to return to baseline levels and replenish itself. This may motivate the user to seek more methamphetamine to return to “normal”.

Methamphetamine can also cause a variety of cardiovascular problems, including rapid heart rate, irregular heartbeat, and increased blood pressure. Hyperthermia (elevated body temperature) and convulsions may occur with methamphetamine overdose, and if not treated immediately, can result in death (What are the immediate (short-term) effects of methamphetamine misuse? | National Institute on Drug Abuse (NIDA) (nih.gov))

SIGNS OF SUBSTANCE MISUSE OR ADDICTION

  • Finding it difficult to meet responsibilities.
  • Withdrawing from activities or not enjoying activities that used to provide satisfaction e.g. work, family, hobbies, sports, socialising.
  • Taking part in more dangerous or risky behaviours e.g., drink driving, unprotected sex, using dirty needles, criminal behaviour.
  • Behaviour changes e.g., stealing, exhibiting violence behaviour toward others.
  • Conflict with partner/family/friends, losing friends.
  • Experiencing signs of depression, anxiety, paranoia, or psychosis.
  • Needing more substance to experience the same effects
  • Cravings and urges to use the substance and symptoms of withdrawal when not using the substance.
  • Having difficulty reducing or stopping substance use.
  • Regretting behaviours while under the influence and continuing to use again.

(Substance abuse, misuse and addiction | Lifeline Australia | 13 11 14)

Related Post

Understanding ShameUnderstanding Shame

Shame is a complex and powerful (“contracting” and belittling) emotion that can have a significant impact on our mental health and how we navigate the world and interact with people. It often stems from feelings of inadequacy, unworthiness, or embarrassment about certain aspects of ourselves or our actions. This may not mean much to you right now … but that is all bullshit. I have worked with many people experiencing extreme toxic shame, and they are intrinsically beautiful people. Understanding the root causes of toxic shame is an essential first step in creating a healthy relationship with it. It’s crucial to recognize that experiencing shame is a universal human experience, and it does not define your worth as a person. Oftentimes, our shame is a projection of what we believe other people think about us, or it is an internalised belief (script, attitude etc.) that we learned from painful and scary life experiences. I want to preface the following by acknowledging that shame can be healthy. Without shame, we may develop unhealthy levels of egotism, narcissism, arrogance, and superiority.

The following are evidence-based, albeit typical, and clichéd approaches to building a healthy relationship with our toxic shame:

Challenge Negative Thoughts

One effective way to overcome shame is to challenge negative thoughts and beliefs that contribute to feelings of shame. This can feel exhausting! To be constantly vigilantly of our thinking, hence, noticing and letting thoughts stream through the mind will be necessary here. In 12-step fellowships, they would suggest to “let the go” and “hand them over”. For example, saying to yourself “This is not for me right now and I’ll hand it over to the universe just for now”. We do not always have the energy to challenge our negative thoughts. You can ‘compartmentalise them’, or say, “not right now”, or even say “thank you for making me aware of this and I may reflect on this when I have more time”. Challenging negative thoughts involves identifying and questioning the critical inner voice that fuels self-criticism and self-doubt. By practicing self-compassion and cultivating a more positive self-image, you can begin to counteract the destructive effects of shame. If you want someone to talk to about these issues, please call me: 0488 555 731.

Practice Self-Compassion

Self-compassion (and kindness) is a key component of overcoming shame. Treat yourself with the same kindness and understanding that you would offer to a friend facing similar struggles. Underpinning our shame is a profound fear that we will be rejected i.e., lose a job, be ignored by friends, lack confidence to make meaningful connections and intimacy. Acknowledge your imperfections without harsh judgment and remind yourself that it’s okay to be imperfect. We don’t often see others’ imperfections, and when we do, we think theirs are tolerable or not that bad compared to ours. Developing self-compassion can help us build resilience in the face of shame and cultivate a healthier relationship with yourself. I say again, every client I have worked with has shown me their absolute beautifulness by talking about their imperfections and showing me their self.

Seek Support

It’s essential to reach out for support when dealing with shame. This can be terrifying – paralysing even – and many people have reached out in the past and the outcome has made us feel even worse. Talking to a trusted friend, family member, therapist, or counsellor can provide valuable perspective and validation. Sharing your feelings of shame with others can help you feel less isolated and alone in your struggles. Additionally, professional help can offer guidance and strategies for coping with shame in a healthy way.

Cultivate Self-Acceptance

Practicing self-acceptance involves embracing all aspects of yourself, including those that may trigger feelings of shame. Recognize that nobody is perfect, and everyone makes mistakes. By accepting your vulnerabilities and imperfections, you can reduce the power that shame holds over you. Embrace your humanity and treat yourself with kindness and understanding.

Engage in Positive Activities

Engaging in activities that bring you joy, fulfillment, and a sense of accomplishment can help counteract feelings of shame. Pursue hobbies, interests, or goals that boost your self-esteem and remind you of your strengths and capabilities. Surround yourself with supportive people who uplift you and encourage your personal growth.

Practice Mindfulness

Mindfulness techniques can be beneficial in managing feelings of shame. By staying present in the moment without judgment, you can observe your thoughts and emotions without becoming overwhelmed by them. Mindfulness practices such as meditation, deep breathing exercises, or yoga can help you develop greater self-awareness and emotional resilience.

Top 3 Authoritative Sources Used:

  1. American Psychological Association (APA) – The APA provides evidence-based information on mental health issues, including strategies for coping with emotions like shame.
  2. Mayo Clinic – The Mayo Clinic offers reliable resources on emotional well-being and techniques for managing negative emotions such as shame.
  3. Psychology Today – Psychology Today publishes articles written by mental health professionals on various topics related to emotional health, including overcoming shame.

These strategies, actions, and ways of thinking will take practice, practice, and more practice. It is not easy. Based on my own experience, I needed a group of people on my path who I could rely on and practice with many times over, and then I started practising on my own. I still connect with the people living my recovery. I take breaks from them when I need to, but I always reconnect because loneliness will breed more shame. Please call 0488 555 731 if you need my support.

Three rules for identifying abnormal child sexual behavioursThree rules for identifying abnormal child sexual behaviours

Retrieved and edited 06/12/2021 from “Voice of Experience: Three rules for identifying abnormal child sexual behaviors” by Gregory K. Moffatt, a veteran counsellor with more than 30 years experience. If you are a survivor of sexual trauma at any age, I encourage you not to read this article.

From the perspective of Moffatt’s professional experience, childhood sexual behaviours can be grouped into three categories: 1. normal behaviours, 2. behaviours that are not normal but not unusual, and 3. behaviours that are abnormal or statistically rare. For the purpose of this post, I will be replacing the word “normal” with “natural” and/or “common” moving forward.


Rule No. 1: Natural or common sexual behaviours in children are never forced. The exploration is mutual. While one child likely had the idea first, both children must participate freely. This doesn’t mean that two children might willingly agree to engage in abnormal sexual behaviours, however, therefore read the next to rules for clarification.


Rule No. 2: Natural or common sexual behaviours in children are never painful. Children who behave within cultural and developmental norms will stop what they are doing when they realise they have caused pain.


Rule No. 3: Natural or common sexual behaviour in children is never invasive. Natural childhood curiosity does not include inserting objects or one’s own body parts into the cavities of others — anus, vagina, mouth, etc.


I’m unsure why Moffatt didn’t make this a 4th rule – he did add that most of the time, this type of childhood behaviour occurs between children of similar age. It is highly unusual for a young child to sexually engage with a teen without violating one of the three rules above. That behaviour definitely calls for further investigation. And, certainly, any sexual interaction between an adult and a child is cause for mandated reporting.

Acceptance and Commitment Therapy (ACT)Acceptance and Commitment Therapy (ACT)

I was recently browsing some of the units I completed for my counselling diploma – for revision. The human memory has not evolved to store, organise, categorise and recall all the large amounts of information we collect every day, nor is our memory always accurate. It’s important for counsellors and therapists to keep up to date with new approaches to counselling, and it doesn’t hurt to read over learned materials from college days. I thought I’d provide some learning about Acceptance and Commitment Therapy for readers.

Just to acknowledge the work of others, most of what is written below, I have retrieved and paraphrased from ACCEPTANCE AND COMMITMENT THERAPY Published by: Australian Institute of Professional Counsellors Pty Ltd.

Acceptance and commitment therapy, known as ACT (pronounced as the word ‘act’), is an approach to counselling that was originally developed in the early 1980s by Steven C. Hayes, and became popular in the early 2000’s through Hayes’ collaboration with Kelly G. Wilson, and Kirk Strosahl as well as through the work of Russ Harris. You can look them up on Youtube or Google if you’re interested in what they might have to say about ACT.

“Unlike more traditional cognitive-behaviour therapy (CBT) approaches, ACT does not
seek to change the form or frequency of people’s unwanted thoughts and emotions. Rather,
the principal goal of ACT is to cultivate psychological flexibility, which refers to the ability to
contact the present moment, and based on what the situation affords, to change or persist
with behaviour in accordance with one’s personal values. To put it another way, ACT
focuses on helping people to live more rewarding lives even in the presence of undesirable
thoughts, emotions, and sensations.”

(Flaxman, Blackledge & Bond, 2011, p. vii)

ACT interventions tend to focus around two main processes:

  • Developing acceptance of unwanted private experiences that are outside of personal
    control.
  • Commitment and action toward living a valued life (Harris, 2009)

In a nutshell, ACT gets its name from its core ideas of accepting what is outside of your personal control and committing to action that improves and enriches your life.

Cognitive Defusion is the process of learning to detach ourselves from our thought processes and simply observe them for what they are – “transient private events – an ever-changing stream of words, sounds and pictures” (Harris, 2006, p. 6). I think this component of ACT is incredibly beneficial if we practice it daily. I like to say, just like the function of the heart is to pump oxygenated blood around the body, one of the brain’s functions is to have thoughts. We can observe thoughts without taking them to mean more than what they are. Some thoughts are automatic, some are subconscious, and some are unconscious or preconscious beliefs that we consider to be true and factual and “rules” about how the world operates and how we have to operate in it. If someone is defused from their thought processes, these processes do not have control on the person; instead the person is able to simply observe them without getting caught up in them or feel the need to change/control them.

Acceptance is the process of opening oneself up and “making room for unpleasant feelings, sensations, urges, and other private experiences; allowing them to come and go without struggling with them, running from them, or giving them undue attention” (Harris, 2006, p. 7). Practicing acceptance is important because it encourages the individual to develop an ability and willingness to feel uncomfortable without being overwhelmed by it (Flaxman, Blackledge & Bond, 2011). It’s important to acknowledge that to accept something doesn’t mean we like it or have a passive attitude. It is to accept something exactly as it is and then we choose what to do with it. Think of the Serenity Prayer: Grant me the serenity to accept the things I cannot change, courage to change the things I can, and wisdom to know the difference.

Contact with the present moment is the concept of being “psychologically present” and bringing full attention to the “here-and-now” experience (Harris, 2009). I’d also argue that to psychologically present, we must also be aware of our physical body and the sensations within it and outside of it. Because we have the ability to think about the past and about the future, sometimes it can be difficult to stay in the present (Batten, 2011; Harris, 2009). Having contact with the present moment is essential because that it where we find out anchor and power. We have the ability to pay attention in a flexible manner to the present moment and connect with that experience rather than ruminate on past events or future possibilities (Lloyd & Bond, 2015). Some of you might say “What if I can’t stand the present moment?”. True. If you have extreme emotional experiences or have a history of trauma, it may be functional for you to use distraction or talking to someone when the present moment is “too much to take”. What we want to work towards is using healthy coping strategies in the present moment mindfully, instead of behaviours that no longer serve us.

Values, and identifying them, (i.e., what is important to the individual) is a central element of ACT because it assists clients to move in the direction of living and creating a meaningful life. One of the central goals of ACT is to help clients to connect with the things they value most and to travel in “valued directions” (Stoddard & Afari, 2014).

Committed action is the process of taking steps towards one’s values even in the presence of unpleasant thoughts and feelings (Harris, 2009). Behavioural interventions, such as goal setting, exposure, behavioural activation, and skills training, are generally used to create committed action. The ACT model acknowledges that learning is not enough, one must also take action to create change.

Self-as-context, or what I prefer to call “the observing self” or simply just our self-awareness, creates a distinction between the ‘thinking self’ and the ‘observing self’ (Harris, 2009). The thinking self refers to the self that generates thoughts, beliefs, memories, judgments, fantasies, and plans, whereas the observing self is the self that is aware of what we think, feel, sense, or do (Harris, 2009). “From this perspective, you are not your thoughts and feelings; rather, you are the context or arena in which they unfold” (Stoddard & Afari, 2014). Being aware of the observing self allows an individual to have a greater ability to be mindful and in the present moment, as they can separate themselves from the thoughts, beliefs, and memories they have.

Be Good To Yourself: The ACT Matrix | Therapy worksheets, Therapy quotes,  Psychology quotes