Eating Disorders DSM-5

Social psychological models of behaviour attempt to explain why individuals act the way they do in various social contexts. These models integrate individual, interpersonal, and societal factors to provide insights into behaviour. Here’s an overview of some key models:

1. Theory of Planned Behaviour (TPB) proposes that behaviour is influenced by:

– Attitudes toward the behaviour

– Subjective norms (perceptions of others’ approval)

– Perceived behavioural control (i.e., confidence in one’s ability to perform the behaviour [self-efficacy])

2. Social Cognitive Theory (SCT) suggests that behaviour is the result of:

– Reciprocal interaction between personal factors (beliefs, attitudes), environmental factors (social norms), and behaviour itself

– Concepts like self-efficacy (belief in one’s ability) play a major role.

3. Health Belief Model (HBM), designed to predict health-related behaviours. Behaviour is driven by factors such as perceived:

– Susceptibility (risk of harm)

– Severity (consequences of harm)

– Benefits (advantages of action)

– Barriers (obstacles to action)

4. Cognitive Dissonance Theory explains how people strive for consistency between their beliefs, attitudes, and behaviours. When inconsistency arises, they feel dissonance (mental discomfort) and are motivated to reduce it by changing their attitudes or actions.

5. Social Identity Theory examines how individuals define themselves within social groups. Behaviour is influenced by group membership, including in-group favouritism and out-group bias.

6. Attribution Theory focuses on how people explain their own and others’ behaviours. Explains behaviour as being attributed either to internal (dispositional) or external (situational) factors. For example, it is common for people to attribute negative outcomes in their life to external factors rather than internal factors.

7. Elaboration Likelihood Model (ELM) explains how people process persuasive messages and what determines whether those messages will change attitudes or behaviour. It’s often applied in areas like marketing, communication, and public health campaigns. The ELM identifies two primary routes through which persuasion can occur:

– Central Route; this route involves deep, thoughtful consideration of the content and logic of a message. People are more likely to take the central route when they are motivated to process the message (e.g., the topic is personally relevant or important to them) and they can understand and evaluate the arguments (e.g., they aren’t distracted, and they have enough knowledge about the subject). Persuasion through the central route tends to result in long-lasting attitude change that is resistant to counterarguments. Example: A person researching the pros and cons of electric cars before deciding to buy one.

– Peripheral Route, which relies on superficial cues or heuristics (mental shortcuts) rather than the message’s content. People are more likely to take the peripheral route when they are not highly motivated or lack the ability to process the message deeply, and when they focus on external factors like the attractiveness or credibility of the speaker, emotional appeals, or catchy slogans. Persuasion through this route tends to result in temporary attitude change that is less resistant to counterarguments. Example: A person choosing a product because their favourite celebrity endorsed it.

8. Self-Determination Theory (SDT) emphasizes intrinsic and extrinsic motivation. It emphasizes the role of intrinsic motivation—doing something for its inherent satisfaction—over extrinsic motivation, which is driven by external rewards or pressures. It suggests that behaviour is influenced by the need for:

– Autonomy (control over one’s actions); When people perceive they have a choice and are acting in alignment with their values, their motivation and satisfaction increase.

– Competence; Refers to the need to feel effective, capable, and successful in achieving desired outcomes. People are motivated when tasks challenge them at an appropriate level and provide opportunities for growth and mastery. Example: A gamer progressing through increasingly difficult levels, gaining skills and confidence along the way.

– Relatedness; Refers to the need to feel connected to others and experience a sense of belonging. Supportive relationships and positive social interactions enhance motivation and well-being. Example: Employees feeling a bond with their colleagues in a collaborative work environment.

9. Social Learning Theory proposes that behaviour is learned through observation and imitation. Role models and reinforcement play a key role in shaping actions.

10. Transtheoretical Model (Stages of Change) explains behaviour change as a process occurring in stages: precontemplation, contemplation (ambivalence), preparation, action, and maintenance

These models provide frameworks to understand behaviours in contexts like health, decision-making, group dynamics, and social influence.

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)

Managing moderate to intense anxiety often involves a combination of techniques that address both the mind and body. Here are some effective strategies:

1. Breathing Exercises: Practice slow, deep breathing to calm your nervous system. For example, inhale for a count of four, hold for four, and exhale for four.

2. Progressive Muscle Relaxation: Tense and then relax each muscle group in your body, starting from your toes and working upward.

3. Grounding Techniques: Use the 5-4-3-2-1 method to focus on your senses—identify 5 things you see, 4 you feel, 3 you hear, 2 you smell, and 1 you taste.

4. Mindfulness and Meditation: Engage in mindfulness practices to stay present and reduce anxious thoughts. Apps like Headspace or Calm can be helpful.

5. Physical Activity: Exercise, even a short walk, can release endorphins and reduce anxiety levels.

6. Cognitive Behavioural Techniques: Challenge negative thoughts by questioning their validity and replacing them with more balanced perspectives.

7. Healthy Lifestyle Choices: Maintain a consistent sleep schedule, eat nutritious meals, and limit caffeine and alcohol intake.

8. Journaling: Write down your thoughts and feelings to process them and identify triggers.

9. Social Support: Talk to trusted friends, family, or support groups to share your experiences and gain perspective.

10. Professional Help: If anxiety persists, consider seeking therapy or counselling. Techniques like Cognitive Behavioural Therapy (CBT) or medication prescribed by a professional can be highly effective.

When traditional strategies don’t seem effective for managing intense, chronic anxiety, there are additional approaches you can explore:

a. Therapeutic Modalities:

Acceptance and Commitment Therapy (ACT): Focuses on accepting anxious thoughts rather than fighting them, while committing to actions aligned with your values.

Dialectical Behavior Therapy (DBT): Combines mindfulness with skills for emotional regulation and distress tolerance.

Eye Movement Desensitisation and Reprocessing (EMDR): Often used for trauma-related anxiety, it helps reprocess distressing memories.

b. Medication:

Anti-anxiety medications or antidepressants may be prescribed by a psychiatrist. These can help manage symptoms when therapy alone isn’t sufficient.

c. Lifestyle Adjustments:

Explore dietary changes, such as reducing sugar and processed foods, which can impact mood and anxiety levels.

Incorporate consistent physical activity tailored to your preferences.

d. Support Groups:

Joining a group for individuals with anxiety can provide a sense of community and shared understanding.

e. Intensive Programs:

Consider enrolling in an intensive outpatient program (IOP) or residential treatment program for anxiety, which offers structured and comprehensive care.

f. Emerging Treatments:

Research into treatments like ketamine therapy or transcranial magnetic stimulation (TMS) shows promise for treatment-resistant anxiety.

g. Alternative Therapies:

Practices like acupuncture, yoga, or tai chi can promote relaxation and reduce anxiety.

Biofeedback and neurofeedback can help you gain control over physiological responses to stress. They are techniques that help individuals gain control over certain physiological and mental processes. Here’s a breakdown:

i. Biofeedback is a mind-body therapy that uses sensors to monitor physiological functions like heart rate, muscle tension, breathing, or skin temperature. The goal is to provide real-time feedback to help individuals learn how to regulate these functions consciously. For example:

Heart Rate Variability Biofeedback: Helps manage stress by teaching control over heart rate.

Muscle Tension Biofeedback: Useful for conditions like chronic pain or tension headaches.

By practicing biofeedback, people can develop skills to manage stress, anxiety, and other health conditions2.

ii. Neurofeedback, a specialised form of biofeedback, focuses on brain activity. It uses electroencephalography (EEG) to monitor brainwaves and provides feedback to help individuals regulate their brain function. For instance:

It can help with conditions like ADHD, anxiety, depression, and PTSD.

During a session, individuals might watch visual cues or listen to sounds that reflect their brainwave activity, learning to adjust their mental state for better focus or relaxation4.

Both techniques are non-invasive and can be effective tools for improving mental and physical well-being.

IMPORTANT NOTE: It’s necessary to consult with a mental health professional or medical doctor to tailor these options to your specific needs.