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Psychiatry

Psychology

Psychology vs. Psychiatry

Anatomy

Neuroscience

etc..

PSYCHIATRY DEEP DIVE

What really is Psychiatry?

Psychiatry is a branch of medicine that focuses on diagnosing, treating, and preventing mental illnesses. Psychiatrists are medical doctors who help with conditions like anxiety, depression, schizophrenia, etc.

Brain Adaptability

The brain can change through experience and therapy, and your lifestyle can reshape neural pathways to improve overall mental health.

Role of Genetics

Genetics play an important role in conditions like schizophrenia, bipolar disorder, and ADHD. A family history may increase the risk, but it doesn’t guarantee they’ll occur. Factors like trauma or stress often connect with genetics, which influence how or if the disorders will happen.

Psychiatry focuses on the brain and what chemicals or parts have to do with mental disorders. While genetics play a key role in mental conditions, therapy and environmental factors can reshape the brain, offering hope for recovery. Social connections and interactions can build resistance against mental health challenges.

PSYCHOLOGY DEEP DIVE

What really is Psychology?

Psychology is the study of how people think, feel, and behave. It focuses and explores on how the mind, actions, and behavior are influenced by:

The brain and nervous system
Environmental factors
Past Experiences

Major Branches of Psychology

Clinical Psychology: diagnosis and treats mental health and disorders
Cognitive psychology: studies mental processes like thinking, memory, and problem solving.
Developmental psychology: looks at how people grow and change from childhood to adulthood.
Social psychology: explores how interactions with others influence thoughts and behaviors.
Neuropsychology: connects brain function to behavior, after studying the effect of brain injuries and disorders

Key Theories in Psychology

Behaviorism— actions are shaped by rewards and punishments.
Cognitive theory— thoughts shape emotions and behavior
Psychoanalysis— the unconscious mind influences behavior.

Real World Applications

Understanding yourself and others can help you better emotionally, make smarter choices, and build stronger relationships. It improves how you connect with people and handle challenges and everyday life.

Brain Structures and Functions

Prefrontal cortex: decision making, impulse control, planning.
Amygdala: emotions, especially fear and anxiety.
Hippocampus: memory formation.
Hypothalamus: hormones, hunger, and stress responses.
Basal ganglia: habit formation and motor control (regulation of body movements).

PSYCHOLOGY VS. PSYCHIATRY

Psychologists vs. Psychiatrists

Psychologists study behavior and mental processes using therapy and counseling.
Psychiatrists are medical doctors who diagnose and treat illnesses, often with medicine.

Education and Training

Psychologists earn a Ph.D (Doctor of Philosophy) or Psy.D (Doctor of Psychology). Psychologists earn a doctoral degree in Psychology without attending medical school.
Psychiatrists earn an M.D (Doctor of Medicine) or D.O (Doctor of Osteopathic Medicine) with residency and mental health. Psychiatrist earn a medical degree by attending medical school.

Treatment Approach

Psychologists use behavioral therapy, cognitive therapy, and talk therapy to help patients.
Psychiatrists use medications, medical treatments, and sometimes therapy to treat mental disorders.

Use of Medication

Psychologists cannot prescribe medication in most places.
Psychiatrists can prescribe many medications, some including SSRIs, mood stabilizers, and antipsychotics.

Psychology focuses on understanding thoughts, behaviors, and emotions through therapy and counseling. It uses different types to help people manage mental health challenges. Psychiatry is a medical field that treats mental health disorders by using medication such as SSRIs, antipsychotics, etc. Psychiatrists and psychologists often work together to help people find the best treatment approach.

ANATOMY DEEP DIVE

What really is Anatomy?

Anatomy is the study of the body structure including bones, muscles, organs, and tissues. It explains how the body parts are built and connected.

Main Branches of Anatomy

Gross anatomy focuses on large structures like the heart, lungs, and bones that can be seen without a microscope.
Microscopic Anatomy looks at tiny structures like cells and tissues using a microscope.

Anatomy helps us understand how the body works, supports medical care, and shows how each part relies on others to stay healthy.

Skeletal System Basics

The skeletal system provides support and structure for the body.
Bones protect vital organs like the heart and lungs that store vital minerals.

Bone Joints and Movement

Joints in cartilage allow movement by working with the muscles.
The skeleton works like a frame and joints make it flexible.
cartilage definition: a flexible tissue that cushions joints, supports structures like the nose and ears, and helps bones move smoothly.

Muscular System Types

There are three types of muscles: skeletal (movement), smooth (organs), and cardiac (heart). Muscles contact to create motion and maintain body posture.

Major systems

Skeletal: bones and joints provide structure and protection.
Muscular: muscles enable movement and generate heat.
Nervous: the brain, spinal cord, and nerves control communication and coordination.
Endocrine: glands produce hormones to regulate growth, mood, and metabolism.
Circulatory: the heart, blood, and vessels transport oxygen, nutrients, and waste.
Respiratory: the lungs and airways allow for breathing and oxygen exchange.
Digestive: breaks down food for nutrients and energy, then removes excess water.
Excretory: kidneys and bladder remove toxins.
Lymphatic/Immune: fights infection and maintains fluid balance.
Reproductive: enables reproduction and hormonal development.
Integumentary: skin, hair, and nails protect the body and regulate temperature.

All body systems work together. For instance, the respiratory system takes in oxygen, which the circulatory system delivers to tissues, while the nervous system coordinates everything. The body’s organization progresses from cells to tissues, organs, systems, and ultimately the whole body. It adapts to changes like exercise strengthening muscles and stress affecting heart rate. This adaptability is essential for survival, enabling everyday activities like walking and breathing through often unnoticed anatomical interactions.

NEUROSCIENCE DEEP DIVE

What is really is Neuroscience?

Neuroscience is the study of the nervous system including the brain, spinal cord, and nerves. It explores how the brain processes information, controls the body, and influences thoughts, behaviors, and emotions. Neuroscience can connect to mental health processes by showing how the brain affects it.

Main Areas of Neuroscience

Molecular Neuroscience: studies how genes, proteins, and neurotransmitters control brain function.
Cellular Neuroscience: focuses on neurons (nerve cells) and how they communicate.
Cognitive Neuroscience: explains how the brain enables thinking, memory, and decision making.
Behavioral Neuroscience: explains how the brain influences emotions, actions, and habits.
Clinical Neuroscience: studies brain disorders like schizophrenia, epilepsy, and Alzheimer’s.
Developmental Neuroscience: investigates how the nervous system grows and changes from embryos to adulthood. Helps explain disorders like ADHD and autism.
Computational Neuroscience: uses math coding in AI to model brain function and understand complex neural processes.

Key Parts of the Nervous System

Central Nervous System (CNS)- made up of the brain and spinal cord which controls the body’s functions.
Peripheral Nervous System (PNS)- includes all the nerves outside the brain and spinal cord. It carries signals between the body and the CNS.

How Neuroscience connects to Mental Health

Neuroscience explains how chemical imbalances cause mental disorders. This leads to treatments like SSRIs or disorders like depression.
Understanding brain plasticity (the brain’s ability to change) helps develop therapies for trauma, learning, disabilities, etc.
Neuroscience supports psychology and psychiatry by showing how our thoughts and behavior are linked to brain and nerve activity.

Real-world Applications

Medical Treatments- neuroscience helps develop medications for mental illnesses, epilepsy, and neurological disorders.
Therapy- cognitive and behavioral therapies are based on how the brain learns and adapts.

Neuroscience bridges the gap between biology, psychology, and medicine, helping our understanding of the mind and behavior!

DISORDERS

ADHD

What is it?

Attention-Deficit Hyperactivity Disorder is a condition that affects focus, impulse control, and hyperactive behavior. It often begins in childhood and can continue through adulthood, impacting daily life. ADD is an old name for a type of ADHD where someone mainly struggles with paying attention but isn’t hyperactive. Doctors use ADHD to describe all types, whether they be hyperactive or impulsive.

Signs and Symptoms

Difficulty focusing, forgetting tasks, or getting easily distracted.
Interrupting others, acting without thinking, fidgeting

Causes and Risks

ADHD has a strong genetic base which runs in families. Other factors like toxins during pregnancy may also contribute. It’s also partially linked to differences in the brain.

Management and Support

Treatments include behavioral therapy and in some cases medication (commonly in children and teens).

Anxiety

What is it?

Anxiety Disorders involve fear or worries of certain things in daily life. COmmon types are generalized anxiety disorder (GAD), social anxiety, and panic disorder.

Causes and Risk Factors

Anxiety often comes from a combination of genetics and and environmental stressors like trauma or ongoing stress. It can also be due to brain chemistry (such as imbalances in serotonin and GABA)

Signs and Symptoms

Physical Symptoms: rapid heartbeat, sweating, trembling, stomachaches
Emotional Symptoms: worry, fear, a sense of death\
Behavioral symptomsL Avoiding situations that might trigger anxiety like public areas,

Impact on Brain and Body

Chromic anxiety keeps the amygdala overactive which disrupts the brain’s ability to regulate emotion. It also increases stress hormones like cortisol which affects the body over time

Management and Treatment

Anxiety can be managed though cognitive- behavior therapy (CBT) or meditation, regular exercise and sometime medications can help as well.

AUTISM

What is it?

ASD (Autism Spectrum Disorder) is a lifelong condition that affects communication, social interaction, behavior, etc. People with ASD process information differently but they might have unique strengths.

Causes and Risk Factors

Studies found that the main cause is genetics.
Brain structure and connectivity differences, mostly in areas that help with responding to sensory or social interaction.
Autism is present from birth and cannot develop later in life.

Signs and Symptoms

Difficulty with social cues (eye contact, facial expression)
Repeating routines or behavior
Sensitivity to things like loud noise or brightness

How it affects daily life

Some people may do better in specific areas (e.g. math, art) but struggle in others (e.g. speaking, reading)

Treatment Options

Starting early with therapies like ABA (Applied Behavior Analysis), Speech, Occupational, and Sensory will help in developing social skills.

The Autism Spectrum

The Autism Spectrum is a range of neurodevelopmental conditions including Autism, Asperger’s syndrome, and Persuasive Developmental Disorder (specifically PDD-Nos). Traits vary along with different levels of severity.

BIPOLAR DISORDER

What is it?

Bipolar Disorder is a condition that causes extreme mood swings between emotional highs (mania or hypomania) and lows (depression). These shifts affect behavior, energy, and can influence decision-making. Mood swings can happen quickly or slowly, and the time to recover from an episode varies.

Causes and Risk Factors

It is linked to genetic factors, chemical imbalances in the brain and different life stressors. Family history may increase your risk.

Signs and Symptoms

Manic Episodes: high energy, racing thoughts, risky behavior
Depressive Episode: sadness, lack of energy, hopelessness
Normal mood may happen between “episodes”.

Management and Treatment

Mood Stabilizers (e.g. lithium which helps control emotions and reduces frequency of episodes) and support from healthcare and family

BPD

What is it?

Borderline Personality Disorder is a mental health disorder known for unstable moods, relationships, and self image.

Causes

Linked to genetics or other factors like childhood trauma.
Emotional regulation difficulty because of brain differences.

Signs and Symptoms

Intense mood swings or fear of abandonment
Impusive behavior like risky actions
Chronic feelings of being empty and a tendency of self harm

How it affects daily life

Hard time maintaining relationships because your not stable in emotions
Difficulty in managing stress and jobs
HIgher risk of depression, anxiety, and also substance abuse.

Treatment options

Dialectical Behavioral Therapy (DBT) is highly effective

Medications for other like antidepressants and mood stabilizers

Support groups and psychotherapy to improve coping skills

coping skills

: the strategies and behaviors people use to manage stressful situations, challenging emotions, and difficult experiences

BPD

What is it?

Borderline Personality Disorder is a mental health disorder known for unstable moods, relationships, and self-image.

Causes

Linked to genetics or other factors like childhood trauma.
Emotional regulation difficulty because of brain differences.

Signs and Symptoms

Intense mood swings or fear of abandonment
Impulsive behavior like risky actions
Chronic feelings of being empty and a tendency of self-harm

How it affects daily life

Hard time maintaining relationships because you’re not stable in emotions
Difficulty in managing stress and jobs
Higher risk of depression, anxiety, and also substance abuse.

Treatment options

Dialectical Behavioral Therapy (DBT) is highly effective
Medications for other conditions like antidepressants and mood stabilizers
Support groups and psychotherapy to improve coping skills

coping skills

: the strategies and behaviors people use to manage stressful situations, challenging emotions, and difficult experiences

BPD (move everything below this so it isn’t centered with the tab)

what is it?

Borderline Personality Disorder is a mental health disorder involving unstable moods, relationships, and self-image.

causes

Linked to genetics, brain structure, and environmental parts like childhood trauma
Emotional regulational difficulties due to brain differences especially in the amygdala and prefrontal cortex

Signs and Symptoms

Intense mood swings and fear of abandonment
Impulsive behaviors like overspending
Chronic feelings of emptiness and a tendency to do self-harm

How it affects daily life

Strained relationships due to emotional instability
Difficulty maintaining relationships, jobs, or managing stress
Higher risk of depression, anxiety, and substance abuse

Treatment Options

Dialectical Behavioral Therapy (DBT) is highly effective
Medications for co-occurring conditions like antidepressants or mood stabilizers
Support groups and psychotherapy to improve coping skills

How is BPD different from Bipolar Disorder?

People with bipolar disorder have mood episodes—like depression or mania—that last for days or even weeks. In borderline personality disorder (BPD), mood shifts happen much more quickly, often within minutes to hours, and come with intense emotions like anger, sadness, emptiness, or feeling abandoned.

Down Syndrome

What is it?

Down Syndrome happens because of an extra chromosome 21. Normally people have 46 chromosomes in total arranged in 23 pairs of 2. In Down Syndrome there is a third copy of chromosome 21 (the 21st chromosome out of 23) which disrupts development. It leads to delays and physical traits like a flat profile or a short height.

Causes

Occurs randomly during cell division which means it isn’t inherited
The extra chromosome can impact your brain and body development

Signs and Symptoms

Distinct physical traits like almond-shaped eyes and a single crease across the palm
Increased risk of health issues such as heart defects or thyroid problems

How it affects daily life

Challenges with learning or self-care may need support
Early action and inclusive education can improve outcomes

Treatment options

Therapies: speech, physical, occupational
Regular medical care to manage health conditions

NOTE: Down Syndrome is not part of or on the Autism Spectrum

Dyslexia

What is it?

Dyslexia is a learning disorder that affects reading and spelling because of difficulties in how the brain processes language.

Causes

Dyslexia is genetic with specific genes linked to brain development. Environmental factors like language exposure could also play a role
Brain structure and function differences in the left hemisphere like regions that disrupt language expression, processing, and word recognition

Signs and Symptoms

Common signs and symptoms include difficulty reading, mixing up similar letters (e.g., b and d), slow reading, or trouble spelling

Treatment Options

Inclusive school environments and tools like text-to-speech and audiobooks help dyslexic people read and learn more effectively. These technologies make school more accessible for people with disabilities

Note: Can math be affected by dyslexia? Yes! Even though dyslexia directly affects reading skills, math can be affected by getting number or word problems confused. A more formal name for people with a learning disability that more directly focuses on math and trouble understanding numbers is called dyscalculia.

Eating Disorders

What are they?

Eating disorders are conditions with an unhealthy relationship with food or body image. Common types include anorexia nervosa (fear of gaining weight), bulimia (binge eating then try not to gain the weight, e.g., vomit), and binge eating disorders.

Causes

A combination of genetics and psychological factors
Can also be caused by environmental factors like bullying
Triggers like stress, social pressure, and trauma could play a role if someone develops an eating disorder

Signs and Symptoms

Extreme precaution with weight or how much you eat
Physical signs: drastic weight changes, digestive issues, fatigue

How they can affect daily life

They can impact relationships, mood, and confidence and can also lead to health complications like malnutrition (condition caused by not enough calories or nutrients) or heart problems

Treatment Options

Therapy: cognitive behavioral therapy (CBT) to help with thought patterns
Nutritional counseling and medical support for physical recovery

Huntington’s Disease

What is it?

A genetic condition caused by a mutation in the HTT gene (gene that codes for protein “Huntington”). It leads to progressive breakdown of nerve cells in the brain affecting movement and awareness.

Causes

Inherited through autosomal dominant (way of one copy of genetic traits to be passed down) pattern meaning the offspring has a 50% chance of getting Huntington’s disease if one parent has the gene

Signs and Symptoms

Uncontrolled jerky movements (chorea)
Memory loss or difficulty organizing thoughts

How it affects daily life

Difficulty with movement, leading to challenges in walking, eating, and speaking
Emotional instability and cognitive decline can strain personal relationships

Treatment Options

There is no cure yet but medicines like tetrabenazine can help with symptoms like chorea
Physical and occupational therapy can help improve

OCD

What is it?

OCD is a mental health condition with unwanted persistent thoughts (obsessions) and repetitive behaviors (compulsions) to ease anxiety

Causes

OCD is mostly classified as an anxiety disorder because of intrusive thoughts but it has its own category: Obsessive-Compulsive and Related Disorders
Exact cause is unknown but linked to genetics and environmental factors
Irregularities in brain areas like orbitofrontal cortex and serotonin imbalance may contribute

Signs and Symptoms

Obsessions: fear of germs, unwanted thoughts, or need for symmetry, etc
Compulsions: excessive cleaning or organizing, etc
Distress if routines are disrupted

How it affects Daily Life

Time-consuming rituals interfere with relationships and daily activities
It may cause social isolation or difficulty concentrating

Treatment Options

Therapy: exposure and response prevention (type of CBT)
Medication: selective serotonin reuptake inhibitors (SSRIs)
Support groups/systems and stress management

PTSD

What is it?

Post-Traumatic Stress Disorder is a mental health condition triggered by experiencing or witnessing a traumatic event such as violence, natural disasters, and accidents. It disrupts the brain’s ability to process the trauma causing stress responses

Causes and Risk Factors

Trauma rewires the brain’s amygdala leading to a heightened fear or alertness
Reduced activity in the prefrontal cortex affects emotional regulation
Lower levels of cortisol make it harder to recover from stress

Signs and Symptoms

Re-experiencing the trauma through nightmares or flashbacks
Avoidance of reminders of the event (places, people, conversation)
Hypervigilance (always on edge or easily distracted)
Emotional numbness or detachment from others

How it affects daily life

PTSD can cause sleep disturbances, difficulties in relationships, and issues with focus/work
May also lead to substance abuse as a coping method

Treatment Options

Therapy: cognitive behavioral therapy (CBT) helps change thoughts or behavior to improve feelings or Eye Movement Desensitization (EMDR) helps reprogram memory with a more positive outlook by simultaneously moving their eyes in a specific pattern
Medication: antidepressants like SSRIs or anti-anxiety medicine
Lifestyle: mindfulness, yoga, and grounding techniques to manage stress responses

Schizophrenia

What is it?

Schizophrenia is a chronic brain disorder that affects thinking, emotions, and behavior. People may get distorted thoughts and have difficulty distinguishing reality from imagination.

Causes

The cause is unknown but linked to a mix of genetics and brain chemistry
Other factors like trauma or infections during pregnancy may affect

Signs and Symptoms

Hallucinations: hearing or seeing things that aren’t there
Delusions: strong false beliefs
Disorganized thinking or speech
Withdrawal from social activities
Unemotional

Brain’s role in Schizophrenia

Imbalances in brain chemicals like dopamine and glutamate are thought to play a role
Brain scans often show differences in structure and activity, such as reduced connectivity in the frontal lobe

Treatment and Management

Schizophrenia is managed with antipsychotic medications, therapy, etc. Early treatment provides better long-term results

Types of Therapy (mostly used in mental health care; has an impact on your mental health)

1. Cognitive Behavioral Therapy

What it is: A structured therapy focusing on identifying and changing negative thought patterns
What it can treat: Anxiety, depression, OCD, PTSD, ADHD, eating disorders, phobias
Subtypes:

Exposure and Response Prevention (ERP): A specific type of CBT to treat OCD by gradually exposing individuals to fears while preventing compulsive behavior
Rational Emotive Behavior Therapy (REBT): Focuses on addressing irrational beliefs that lead to emotional distress
Trauma-focused CBT: Specially tailored for PTSD and trauma-related behavior

2. Dialectical Behavioral Therapy (DBT)

What it is: A specialized CBT that emphasizes emotional irregularity, mindfulness, distress tolerance, and improving communication and relationship skills
What it can treat: Borderline personality disorder, self-harm, eating disorders, substance abuse, and emotional irregularity
Other info: Often used when emotion-driven behaviors are notable

3. Psychotherapy (Talk Therapy)

What it is: A general term used for talk-based treatments to explore thoughts, feelings, and behavior. Also referred to as just “therapy”
What it can treat: Depression, anxiety, relationship issues, grief, adjustment issues
Subtypes: Includes psychodynamic, CBT, and more depending on the approach

4. Psychodynamic Therapy

What it is: A therapy that examines unconscious patterns, past experiences, and their influence on current behaviors
What it can treat: Depression, anxiety, personality disorders, and unresolved trauma
Other info: It’s a modern adaptation of the Freudian psychoanalysis (set of psychological and therapy methods)

5. Applied Behavior Analysis (ABA)

What it is: A structured approach using techniques to improve behavior, often in children
What it can treat: Autism Spectrum Disorder, ADHD, and developmental delays
Other info: Focuses on measurable changes in behavior

6. Family Therapy

What it is: Therapy involving family members to improve communication and other issues
What it can treat: Relationship conflicts, parenting challenges, and the effects of mental health disorders
Subtypes: Structured family therapy, systemic therapy, and strategic strategy

7. Group Therapy

What it is: Therapy conducted in a group setting, allowing individuals to share experiences and support each other
What it can treat: Addiction, social anxiety, trauma

8. Eye Movement Desensitization and Reprocessing (EMDR)

What it is: A trauma-focused therapy that uses guided eye movement to reprocess traumatic events/memories
What it can treat: PTSD, trauma, anxiety, phobias
Other info: Based on the idea that distressing memories can be “unstuck” through engaging both sides of the brain at the same time (bilateral stimulation)

9. Speech Therapy

What it is: A therapy aimed at improving communication, language, and swallowing difficulties
What it can treat: Speech delays, stuttering, dyslexia, and other speech challenges from neurological disorders
Other info: Often used for individuals with ASD, Down Syndrome, and after brain injuries

10. Trauma-focused Therapy

What it is: A therapy designed to specifically address the emotional effects of trauma
What it can treat: PTSD, abuse recovery, (childhood) trauma
Subtypes: Trauma-focused CBT and EMDR are common

11. Humanistic Therapy

What it is: A client-centered approach focusing on personal growth, self-acceptance, achieving potential
What it can treat: Depression, anxiety, and self-esteem issues
Other info: Focuses on positive aspects and self-exploration

BRAIN PARTS

Involved

Prefrontal Cortex

Function: Responsible for decisions (like planning, self-control, impulse control, judgment)
Relevance: Helps with day-to-day decision making and social interactions. If it doesn’t work properly (like in ADHD), it can affect functioning and impulsivity

Amygdala

Function: Processes emotions (especially fear, anger, and self-defense). Involved in emotional regulation
Relevance: Overactivity can lead to anxiety, PTSD, or phobias. Underactivity might affect emotional regulation, in ASD → affecting self-emotion and emotional understanding

Hippocampus

Function: Involved in short-term to long-term memory. Also helps in spatial navigation
Relevance: Disrupted hippocampus is linked with PTSD, depression, and Alzheimer’s. PTSD (smaller hippocampus) → harder to regulate stress. Alzheimer’s → affects memory

Cerebellum

Function: Coordinates balance, posture, and voluntary movements
Relevance: Plays a big role in motor control. ADHD, autism, schizophrenia → might be smaller/different cerebellum. That can affect movement, coordination, and emotional regulation

Left Temporal Lobe

Function: Mainly involved in language processing. Also important in memory and understanding speech
Relevance: Damage can lead to problems like aphasia and memory issues. In mental health, processing difficulties like dyslexia

Right Temporal Lobe

Function: Involved in recognizing faces, processing music, memory, and visual perception
Relevance: Prosopagnosia → not recognizing faces. Can also affect memory and interpreting social/emotional cues

Frontal Lobe

Function: Decision making, voluntary movement, reasoning, self-control, and language
Relevance: Frontal lobe dysfunction can lead to impulsivity, poor judgment, and difficulty in planning. In schizophrenia → abnormalities often found here

Hypothalamus

Function: Regulates essential body functions like hunger, thirst, sleep, and hormone release. Also involved in stress response
Relevance: If dysregulated, it can lead to issues like eating disorders (anorexia/bulimia), depression (hormone regulation), and emotional imbalances

HORMONES

Cortisol

Role: Stress hormone produced by adrenal glands
Function: Assists in body’s stress response by regulating metabolism, blood sugar, inflammation, and memory formation
Relevance: Prolonged high levels → increased risk of depression, anxiety, and memory difficulties. Dysregulation linked to fatigue, sleep problems, and mental disorders like Addison’s disease

Adrenaline (Epinephrine)

Role: Produced by adrenal glands
Function: “Fight or flight” response. Increases heart rate, blood flow, triggers energy release
Relevance: Plays key role in anxiety and panic disorders. Overproduction can overstimulate cardiovascular system → hypertension, stroke, or heart disease

Serotonin (as a hormone)

Role: Mostly a neurotransmitter but also acts as a hormone
Function: Regulates mood, appetite, digestion, sleep-wake cycles
Relevance: Low serotonin → depression, anxiety, and mood disorders. SSRIs target serotonin

Oxytocin

Role: Produced in hypothalamus, released by pituitary gland. Called “love hormone”
Function: Social bonding, maternal behaviors, attachment
Relevance: Low levels → social anxiety, difficulties forming bonds. High levels → attachment, trust, empathy

Melatonin

Role: Secreted by pineal gland → regulates sleep-wake cycle
Function: Controls circadian rhythms and sleep patterns
Relevance: Disruptions can cause sleep disorders, SAD, difficulty adjusting to jet lag

Thyroid Hormones (T3 and T4)

Role: Released from thyroid gland
Function: Regulate metabolism, energy levels, growth, and development
Relevance: Hypothyroidism → tiredness, weight gain, depression. Hyperthyroidism → anxiety, irritability, restlessness

Testosterone

Role: Produced mainly in testes (males) and ovaries (females), responsible for male sexual characteristics, muscle growth, and strength
Relevance: Imbalance may affect mood & energy. Low levels → depression, fatigue, low self-esteem

Endorphins

Role: Released by pituitary gland and brain, increase energy, relieve stress and pain
Relevance: Low levels → depression, chronic pain, lack of motivation

Human Growth Hormone (HGH)

Role: Produced in pituitary gland, stimulates growth, cell repair, and metabolism
Relevance: Deficiency → hinder growth, fatigue, depression, reduced stamina

Dopamine (as a hormone)

Role: Vital in pleasure, reward-seeking behavior, motivation, motor control
Relevance: Too little → depression, Parkinson’s, lack of motivation. Too much → ADHD, psychosis, addiction

What are hormones?

Hormones are chemical messengers that regulate several functions in the body (growth, metabolism, mood, reproduction)
Produced in endocrine glands and travel through bloodstream to reach target organ/tissue

How hormones work?

Endocrine glands release hormones into bloodstream
They travel to specific target organs or tissues
Cells respond to the hormones’ signal, bringing changes and maintaining balance

The 4 “feel-good” hormones

Dopamine (The reward hormone)

Motivation, pleasure, reward
Released during eating, achieving goals, receiving praise

Serotonin (The mood stabilizer)

Boosted by sunlight, exercise, meditation
Affects happiness, mood, well-being

Endorphin (The pain reliever)

Released during exercise, laughter, stress
Reduces pain, increases euphoria

Oxytocin (The love hormone)

Increases bonding, trust, connection
Released during hugging, physical touch, cuddle

What are neurotransmitters?

Chemical messengers that allow neurons to communicate through electrical signals
Transmit signals across synapse to control mood, memory, body functions

How neurotransmitters work?

Nerve releases neurotransmitters into synapse
Neurotransmitters bind to receptors of next neuron
Electrical signal passes through neuron
Neurotransmitters released again for next transmission

How are hormones + neurotransmitters different?

Feature	Neurotransmitters	Hormones
Released from	Nerve cells (neurons)	Endocrine glands
Travel through	Synapse (short distance)	Bloodstream (long distance)
Speed of effect	Fast (milliseconds)	Slower (seconds to hours)
Duration	Short-lived	Long-lasting
Examples	Dopamine, Serotonin	Estrogen, Testosterone

What are glands?

Organs that secrete hormones or other substances
Endocrine glands → release hormones into bloodstream (Ex: thyroid)
Exocrine glands → release substances through ducts (Ex: sweat, saliva)

Major Endocrine Glands

Pituitary (brain) → controls other glands, produces growth hormone
Thyroid (neck) → regulates metabolism
Parathyroid (neck) → balances calcium in blood
Adrenal (top of kidneys) → produces stress hormones
Pineal (brain) → regulates sleep
Pancreas → produces insulin

Major Exocrine Glands

Sweat → skin, regulate temperature
Salivary → saliva, digestion
Sebaceous → oil, keeps skin soft
Lacrimal → tears, protect eyes
Prostate (male) → nourishes sperm
Pancreas → digestive juices

WHY DOES EXERCISE MAKE PEOPLE FEEL BETTER

Releases “feel-good” chemicals → endorphins, dopamine, serotonin, oxytocin
Improves mood, energy, focus, reduces anxiety, improves sleep
Reduces stress hormones → lowers cortisol
Increases oxygen & blood flow to brain → better attention, focus, memory
Regulates nervous system → relaxation, heart rate, digestion
Improves sleep quality → regulates circadian rhythm, increases serotonin

TO CLARIFY (Nervous System)

CNS → brain + spinal cord, controls most functions
PNS → all nerves outside CNS, carries info to/from CNS
Nervous system signals travel through neurons

Boost self-esteem + confidence

Regular exercise can improve body image + self-perception → might lead to improved self-esteem
Completing workouts aligns with a sense of accomplishment → helps with positive mindset

Social and Environmental Benefits

Physical activity releases social + environmental benefits
Being part of fitness communities, classes, sports, teams strengthens relationships + mental well-being
Outdoors → sunlight reduces stress, enhances peace

Long-term protection against mental health

Consistent physical activity reduces stress, risk of depression, anxiety, cognitive decline
Maintains emotional resilience → easier to cope with daily stressors

COGNITIVE DEFINITION

cog·ni·tive (adjective) = “related to conscious intellectual activity (thinking, remembering, reading)”
RELATED: cognitively / cognition
SYNONYMS: reasonable, analytical, perception, awareness

SSRIs (Selective Serotonin Reuptake Inhibitors)

Common antidepressants for depression, anxiety, OCD
Increase serotonin levels in the brain → better mood

How SSRIs work?

Block reabsorption (reuptake) of serotonin → more available in synapse
Longer-lasting “feel-good” effect

Common SSRIs (brand)

Fluoxetine (Prozac) → depression, OCD
Sertraline (Zoloft) → depression, anxiety, panic
Escitalopram (Lexapro) → depression, anxiety
Paroxetine (Paxil) → depression, panic, OCD
Citalopram (Celexa) → depression, anxiety
Fluvoxamine (Luvox) → OCD, social anxiety

Benefits

Effective for many mental health conditions
Regulates emotions, reduces obsessions/negative thoughts
Fewer side effects than older antidepressants

Potential Side Effects

Common: nausea, headache, dizziness, fatigue
Emotional: some feel heightened anxiety initially
Weight gain/loss (varies)

How long to work?

4–6 weeks for full effects
Start low, increase slowly

Who shouldn’t take SSRIs?

People on MAOIs → dangerous interaction
Seizures, liver disease, severe bipolar
Can worsen mania in bipolar
Serotonin syndrome
Mixing with other antidepressants without approval
Extremely sensitive to medication or other mental health conditions

Neurotransmitters and their roles (4 major)

Serotonin → calm, mood regulation; low = depression/anxiety
Dopamine → motivation/reward; low = ADHD/depression
Norepinephrine → alertness, focus, energy; low = ADHD
GABA → calming; low = anxiety disorders

Why Mental Health matters during growth

Brain + body still developing → forms lifelong behavior
Mental health affects emotions + biology → early struggles carry on
Examples: anxiety → sleep problems, fast thinking, stomach aches; depression → appetite, mood, slower processing
Disorders like OCD often start early, many don’t get help

How psychiatry and anatomy are connected

Brain affects body as much as body affects brain
Strong emotional health → physical health improves

The long-term impact

Childhood resilience/support shapes coping skills
Trauma/neglect → stress issues later
Kids manage emotions better when mental health prioritized early

Conclusion

Mental health is just as important as physical, especially during growth

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email me!

contact@learningpsych.org

Sources & Legal

Our References: Content is content is created from authoritative bodies and trusted sources: Sources & Acknowledgements
Independent Resource: This site is an independent educational project and is not officially affiliated with the organizations cited.

Medical Disclaimer

This site is for educational purposes only and does not provide medical advice. Never disregard professional medical advice because of something you read here. If you are in crisis, call or text 988 or 911 immediately. Use of this site is at your own risk.

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Thank you for learning with me! 🙂

Aamir Jones

Sources and Acknowledgments

This website was created to explain mental health, neuroscience, anatomy, and related topics in a clear, understandable(for all ages) way. All content is written with my original wording for educational purposes and does not reproduce copyrighted material. Because this project began as personal research, individual article citations are not listed for every page; instead, the information is created from a general reference list of trusted organizations and reviewed domains.

Trusted General References

Information is gathered from leading health and scientific institutions, including:

Governmental & Global Health: Centers for Disease Control and Prevention (CDC), National Institutes of Health (NIH), National Institute of Mental Health (NIMH), and the VA, etc.
Medical & Professional Associations: American Psychiatric Association, Society for Neuroscience, American Psychological Association, and the Mayo Clinic, etc.
Educational & Research Platforms: BrainFacts.org, Harvard Health Publishing, MedlinePlus, PubMed, Frontiers in Psychology, and the Yale Center for Dyslexia, etc.
Specialized Advocacy Groups: CHADD, Autism Speaks, ASAN, KidsHealth, Understood.org, National Down Syndrome Society, and the Tourette Association of America, etc.

Important Disclaimers

Affiliation: This website is an independent educational resource and is not affiliated with, endorsed by, or sponsored by any organizations
Content Creation: While this site uses a .org domain to reflect its goal as an educational resource, its reliability is rooted in the use of the trusted sources and general web-based research. Language-refinement tools were used to improve clarity and readability, not to generate factual content.
Disclaimer: This website does not provide medical or mental health services. Always seek guidance from a qualified healthcare professional if you have questions about mental health or your personal situation. Do not delay or avoid seeking professional help because of something you read on this website.This website does not cover every mental health condition or disorder. Mental health is complex, and no single resource can include every diagnosis, symptom, or individual experience. Any reference to outside publications is for educational purposes only. If you or someone you know is in immediate danger or experiencing a mental health emergency, call your local emergency number right away. You can call or text 988 Suicide & Crisis Lifeline to reach a helpline. Use of this website and its content is at your own risk

If you have questions, please contact me at contact@learningpsych.org for detailed information

Thank you for visiting and learning with me! 🙂

Mental Health and Awareness Calendar

(Fixed Annual & Consistent Floating Dates)

January

Month: Mental Wellness Month
Month: National Poverty in America Awareness Month

February

Month: American Heart Health Month
Feb 17: Random Acts of Kindness Day
Feb 19: Founding of Mental Health America (MHA) Anniversary
Last Full Week: National Eating Disorders Awareness Week (NEDAwareness)

March

Month: Self-Harm / Self-Injury Awareness Month
Mar 1: Self-Injury Awareness Day (SIAD)
Mar 2: World Teen Mental Wellness Day
Mar 8: International Women’s Day
Mar 20: International Day of Happiness
Mar 30: World Bipolar Day

April

Month: Stress Awareness Month
Month: Autism Acceptance Month
Apr 2: World Autism Awareness Day
Apr 7: World Health Day

May

Month: Mental Health Awareness Month
Month: Maternal Mental Health Awareness Month
May 5: National Silence the Shame Day
May 24: World Schizophrenia Awareness Day
May 28: International Day of Action for Women’s Health
First Full Week: Children’s Mental Health Awareness Week
Thursday of First Full Week: National Children’s Mental Health Awareness Day
First Wednesday: World Maternal Mental Health Day

June

Month: PTSD Awareness Month
Month: Men’s Health Month
Month: Pride Month (LGBTQ+ Mental Health)
Jun 27: National PTSD Awareness Day

July

Month: Bebe Moore Campbell National Minority Mental Health Awareness Month
Jul 24: International Self-Care Day

August

Month: National Wellness Month
Aug 30: National Grief Awareness Day

September

Month: National Suicide Prevention Month
Month: National Recovery Month
Sept 10: World Suicide Prevention Day
Week of Sept 10: National Suicide Prevention Week

October

Month: ADHD Awareness Month
Month: National Bullying Prevention Month
Month: Health Literacy Month
Oct 10: World Mental Health Day
Oct 10: National Depression Screening Day (Often observed on World Mental Health Day)
Oct 27: World Occupational Therapy Day
First Full Week: Mental Illness Awareness Week (MIAW)
Second Full Week: OCD Awareness Week

November

Month: National Gratitude Month
Month: National Family Caregivers Month
Nov 13: World Kindness Day
Saturday before Thanksgiving: International Survivors of Suicide Loss Day

December

Month: Seasonal Affective Disorder (SAD) Awareness Month
Dec 2: Women’s Brain Health Day
Dec 3: International Day of Persons with Disabilities