ALFATH: human body control network

The Nervous System

First: Introduction to the Nervous System

The nervous system is one of the most important systems in the human body, responsible for regulating all body activities, whether voluntary like movement, or involuntary like heartbeat and breathing. The nervous system works on the principle of transmitting electrical and chemical signals between the body's organs and the brain to issue commands and responses.

Second: Components of the Nervous System (in detail)

The nervous system in the human body consists of two main parts that work in perfect harmony to coordinate all body functions: the Central Nervous System and the Peripheral Nervous System. Each includes different organs and cells, but they share the general goal of transmitting information and controlling body functions.

1. Central Nervous System (CNS)

This system is considered the command and control center, responsible for interpreting information coming from the body and issuing appropriate decisions.

First: The Brain

The brain is the most complex organ in the body, weighing about 1.3–1.5 kg. It consists of several parts:

A. Cerebrum

• The largest part of the brain.
• Responsible for thinking, memory, language, decision-making, creativity, and sensation.
• Divided into two hemispheres: left and right, each responsible for specific functions.
• Its cortex (cerebral cortex) contains billions of nerve cells.

B. Cerebellum

• Located in the back part of the brain.
• Very important for coordinating movement, balance, muscle control, and motor precision.
• Any dysfunction in it causes tremors and balance disorders.

C. Brainstem

Includes:

• Medulla Oblongata
• Pons
• Midbrain

Its functions:

• Regulating breathing
• Adjusting heart rate
• Controlling blood pressure
• Regulating sleep and wakefulness
• Transmitting signals between the brain and spinal cord

The brainstem is considered the center of "basic life," and any injury to it can be serious.

Second: Spinal Cord

• A cylindrical bundle of nerves extending inside the vertebral column.
• Transmits signals between the brain and the rest of the body.
• Responsible for the body's rapid reflexes, like pulling the hand from a hot object.
• 31 pairs of spinal nerves branch out from it, connecting the limbs and muscles to the internal organs.

2. Peripheral Nervous System (PNS)

Represents the communication network that connects the Central Nervous System to every part of the body, and consists of two main types: somatic and autonomic nerves.

First: Somatic Nervous System

Responsible for:

• Voluntary movements
• Sensation of touch, heat, cold, and pain
• Control of skeletal muscles

Includes:

• Sensory nerves: transmit information from the skin and muscles to the brain and spinal cord.
• Motor nerves: transmit commands from the brain to the muscles to move them.

Second: Autonomic Nervous System (ANS)

Regulates involuntary internal functions. It is divided into two opposing divisions that work in balance:

1. Sympathetic Nervous System

Called the "emergency" system because it activates in situations of:

• Fear
• Stress
• Fighting or fleeing

Its main functions:

• Increasing heart rate
• Dilating airways
• Increasing blood flow to muscles
• Dilating pupils
• Temporarily inhibiting digestion

2. Parasympathetic Nervous System

Called the "rest and digest" system, and activates in calm states.

Its main functions:

• Lowering heart rate
• Constricting pupils
• Increasing intestinal movement
• Activating digestion
• Increasing saliva and digestive enzyme secretion

Balance between the Sympathetic and Parasympathetic systems is very important for body health; its imbalance leads to disorders like anxiety, high blood pressure, and digestive disorders.

Third: Cranial Nerves

• There are 12 nerves that emerge directly from the brain.
• Responsible for most head and face functions such as:
• Vision
• Hearing
• Smell
• Taste
• Eye movement
• Facial movement
• Swallowing and speech
• Control of some internal organs (like the heart via the Vagus nerve)

Fourth: Spinal Nerves

• There are 31 pairs.
• They emerge from the spinal cord.
• They distribute to:
• Neck
• Chest
• Abdomen
• Arms
• Legs

Their functions:

• Transmitting sensation from body parts to the Central Nervous System
• Transmitting motor commands from the brain and spinal cord to the muscles

Fifth: Neurons

They are the basic unit of the nervous system.

Their components:

• Cell body: contains the nucleus.
• Dendrites: receive signals.
• Axon: transmits signals to other cells.
• Nerve endings: release neurotransmitters.

Their types:

• Sensory
• Motor
• Interneurons (connect nerves within the brain)

Sixth: Glial Cells (Supporting Cells)

They are not nerves but are very important. Their function:

• Protecting neurons
• Providing them with nutrition
• Removing waste
• Producing Myelin which increases the speed of signal transmission

Some of their types:

• Schwann cells
• Microglia
• Astrocytes

Third: Types of Nerves and Their Functions (in detail)

Nerves in the human body are divided into three main types, according to the nature of the signals they transmit: sensory nerves, motor nerves, and autonomic nerves. Each type plays a fundamental role in ensuring the body's communication with the external environment and regulating its internal functions.

1. Sensory Nerves

These are the nerves responsible for receiving information from body parts and transmitting it to the Central Nervous System (brain and spinal cord).

They enable humans to sense everything around them.

Functions of Sensory Nerves:

1. Transmitting touch sensation
   Such as sensing the texture of objects, pressure, vibration.
2. Sensing pain
   A fundamental function to alert the body to danger.
3. Sensing heat and cold
   This helps avoid injuries from high heat or extreme cold.
4. Sensing balance and movement
   Through special receptors in the inner ear, muscles, and joints.
5. Transmitting internal sensation
   Such as feeling hunger, thirst, stomach fullness, or internal pain.

Examples of sensory nerves:

• Optic nerve (transmits images from the eye to the brain)
• Auditory nerve
• Cutaneous nerves

Signs of sensory nerve damage:

• Tingling and numbness
• Burning sensation
• Partial or complete loss of sensation
• Pain upon light touch

2. Motor Nerves

These are the nerves that work in the opposite direction to sensory nerves; they transmit commands from the brain and spinal cord to the muscles to move them.

Functions of Motor Nerves:

1. Moving the body's voluntary muscles
   Such as walking, writing, speaking, lifting objects.
2. Controlling fine movements
   Such as moving fingers or eye movement.
3. Regulating muscle strength and balance
   To prevent falling or shaking during movement.
4. Coordinating movements in different body regions
   In cooperation with the cerebellum and brainstem.

Examples of motor nerves:

• Nerves that move hand and foot muscles
• Nerves that control facial muscles
• Respiratory nerves that move the diaphragm muscle

Signs of motor nerve damage:

• Muscle weakness
• Cramps or spasms
• Loss of movement control
• Partial or complete paralysis in the affected muscles

3. Autonomic Nerves

These are the nerves that control involuntary internal functions, meaning those that occur without human intervention, and work 24 hours a day.

They are divided into two main types:

• Sympathetic
• Parasympathetic

And they work in a balanced and integrated manner.

Functions of Autonomic Nerves:

First: In the Sympathetic System (Emergency)

During stress, fear, or effort:

• Increase heart rate
• Raise blood pressure
• Dilate pupils
• Increase blood flow to muscles
• Slow digestion
• Increase adrenaline secretion
• Dilate airways for rapid breathing

Second: In the Parasympathetic System (Rest and Digestion)

During relaxation:

• Lower heart rate
• Activate digestion process
• Activate saliva and enzyme secretion
• Constrict pupils
• Regulate urination and defecation
• Calm the body and return it to normal state

Organs controlled by autonomic nerves:

• Heart
• Intestines
• Stomach
• Salivary glands
• Bladder
• Lungs
• Blood vessels
• Reproductive organs
• Liver and pancreas

Signs of autonomic nerve disorder:

• Irregular heartbeat
• Digestive problems (nausea – constipation – diarrhea)
• Dizziness or fainting when standing up
• Excessive sweating or lack of sweating
• Blood pressure disorder
• Tremors or excessive anxiety

4. Mixed Nerves

There are nerves that carry both sensory and motor fibers at the same time, which are common in the Peripheral Nervous System.

Their function:

• Receiving sensation
• Sending movement commands in the opposite direction

Example:
Spinal nerves — they transmit sensation from the skin, and at the same time transmit movement commands to the muscles.

5. The Difference Between the Three Types in Brief:

Type - Direction - Function - Example

Sensory - From body to brain - Transmitting sensation - Optic nerve

Motor - From brain to muscles - Executing movement - Limb nerves

Autonomic - Dual but involuntary - Regulating internal organs - Sympathetic and Parasympathetic

Fourth: How Neural Signals Work (in detail)

Neural signals work in the body through an integrated system that combines electricity and chemistry. They start as electrical impulses traveling inside the nerve cell, then turn into chemical signals when transmitted to another cell through synapses.

To understand this system, three basic steps must be known:

1. Formation of the neural signal inside the cell
2. Its transmission along the axon
3. Its transmission to another nerve cell through the synapse

1. Formation of the Neural Signal (Electrical Charge)

The neural signal is an electrical change that occurs inside the nerve cell (neuron).

This change is known as Action Potential.

A. Resting State (Resting Potential)

In the normal state, the nerve cell is "resting" and carries an electrical charge of about –70 millivolts.

This is because it contains more negative ions inside than outside.

Substances such as:

• Sodium (Na⁺)
• Potassium (K⁺)

participate in maintaining this state.

B. Start of the Signal – Depolarization Process

When the cell receives a strong stimulus (like touching a hot object), sodium channels open and Na⁺ enters the cell in large quantities.

As a result:

• The charge becomes positive instead of negative
• The electrical potential rises to about +30 millivolts

This is the beginning of the neural signal.

C. Repolarization

After generating the signal:

• Sodium channels close
• And potassium channels (K⁺) open

So potassium exits the cell, gradually decreasing the charge and returning the cell to its normal state.

D. Refractory Period

During it:

• The cell cannot generate another signal immediately
• And ions are redistributed inside and outside the cell via the sodium-potassium pump

2. Transmission of the Neural Signal Along the Axon

After the signal is formed, it must travel quickly to the end of the axon.

A. Continuous Conduction

Occurs in nerves that do not have a myelin sheath

And the conduction speed is relatively slow.

B. Saltatory Conduction

Occurs in nerves covered with Myelin Sheath, a fatty sheath produced by cells such as:

• Schwann Cells
• Oligodendrocytes

Function of Myelin:

• Insulating the axon
• Speeding up the neural signal to multiples of its normal speed

The jump occurs at points called Nodes of Ranvier

So the signal jumps from one point to another instead of traveling the entire way, increasing conduction speed to approximately 120 meters/second.

3. Transmission of the Signal to Another Cell (The Synapse)

When the signal reaches the end of the axon, it cannot cross electrically directly.

So it is converted into a chemical signal via the "synapse".

Parts of the synapse:

1. Nerve ending of the first nerve
2. Synaptic cleft (the distance between the two cells)
3. Receptors of the second nerve

How does the signal travel in the synapse?

A. Signal arrival at the nerve ending

When the electrical signal arrives, calcium channels (Ca⁺⁺) open.

B. Calcium entry into the nerve ending

This causes small vesicles to move towards the membrane.

C. Neurotransmitter release

The vesicles release chemical substances called Neurotransmitters, including:

• Dopamine
• Serotonin
• Norepinephrine
• Acetylcholine
• Glutamate
• GABA

D. Binding of the neurotransmitter to receptors

The substances bind to receptors located on the next nerve cell.

E. Activation of the second cell

After binding:

• Either the cell activates and generates a new signal
• Or it is inhibited (depending on the type of neurotransmitter)

F. Removal of the neurotransmitter

To keep the system precise, the neurotransmitter must be removed after performing its role via:

• Reabsorption
• Breakdown by enzymes
• Diffusion out of the synapse

4. Speed of the Neural Signal

The speed of the nerve impulse depends on:

• Presence of myelin: without it the signal is slower
• Nerve diameter: thicker nerves are faster
• Type of nerve: motor nerves are often faster than sensory
• Temperature: cold slows signals

Examples:

• Pain nerves: relatively slow
• Touch and movement nerves: very fast

5. Simplified Example of How Neural Signals Work

When touching a hot object:

1. Heat receptors in the skin send a sensory signal.
2. The signal travels quickly via a sensory nerve to the spinal cord.
3. The spinal cord sends an immediate command via a motor nerve (reflex) to withdraw the hand.
4. Simultaneously, the signal is sent to the brain to interpret what happened.
5. The brain feels the pain after a fraction of a second.

Fifth: Most Important Nerve Diseases (in detail)

Nerve diseases are among the most common and complex diseases, because they can affect any part of the nervous system: the Central Nervous System (brain and spinal cord) or the Peripheral Nervous System (peripheral nerves).

Nerve diseases vary between inflammations, degenerative disorders, injuries, pressures, and diseases related to immunity or metabolism.

Below are the most famous nerve diseases with details of each:

1. Neuritis & Neuropathy

These are injuries that affect the nerves and can be acute or chronic.

A. Causes:

• Vitamin deficiency (especially B1, B6, and B12)
• Diabetes
• Viral infections (herpes – CMV – HIV)
• Bacterial infections (like leprosy)
• Exposure to toxins (alcohol – lead – mercury)
• Some medications like chemotherapy
• Autoimmune diseases

B. Symptoms:

• Tingling and numbness
• Burning sensation
• Sharp pain especially at night
• Muscle weakness
• Loss of sensation

C. Treatment:

• B complex vitamins
• Painkillers and nerve medications
• Diabetes treatment
• Treating the cause of inflammation (like antibiotics or antivirals)
• Physical therapy

2. Diabetic Neuropathy

One of the most famous and common nerve diseases.

Causes:

• Long-term high blood sugar leads to damage to small nerves, especially in the feet.

Symptoms:

• Pain and burning in the feet
• Gradual loss of sensation
• Foot ulcers (serious)
• Weak neural reflexes
• Pain upon light touch

Treatment:

• Precise control of blood sugar level
• Treating neural pain
• Daily foot examination
• Medical shoes
• Vitamin B supplements

3. Nerve Compression

Occurs when a nerve is subjected to pressure in a specific location.

Most famous types:

A. Herniated Disc and Sciatica

• Pressure occurs on the sciatic nerve extending from the lower back to the foot.

Symptoms:

• Pain extending from the back to the leg
• Numbness
• Muscle weakness

B. Carpal Tunnel Syndrome

Pressure on the median nerve in the wrist.

Symptoms:

• Numbness in the fingers
• Pain when using the hand
• Weak grip

C. Pressure on neck nerves

Causes:

• Neck pain
• Headache
• Numbness in the arms

Treatment:

• Physical therapy
• Painkillers
• Cortisone injections when necessary
• Surgery in severe cases

4. Neurodegenerative Diseases

These are chronic diseases in which nerve damage leads to continuous deterioration over time.

Most famous:

A. Alzheimer’s Disease

• Affects memory, thinking, and behavior.

Symptoms:

• Memory loss
• Difficulty thinking
• Behavior change

B. Parkinson’s Disease

• Movement disorder due to dopamine deficiency.

Symptoms:

• Tremors
• Slow movement
• Muscle rigidity

C. Multiple Sclerosis (MS)

• An autoimmune disease that attacks the myelin around nerves.

Symptoms:

• Numbness
• Muscle weakness
• Visual disturbances
• Loss of balance

D. Amyotrophic Lateral Sclerosis (ALS)

• Affects the cells responsible for movement.

Symptoms:

• Progressive weakness
• Difficulty speaking
• Respiratory problems

5. Paralysis

Occurs when neural signals do not reach certain muscles.

Its causes:

• Brain injuries (stroke – hemorrhage)
• Spinal cord injury
• Peripheral nerve disease
• Viral infections (like polio)

Its types:

• Hemiplegia
• Quadriplegia
• Localized paralysis

Treatment:

• Rehabilitation
• Medications according to the cause
• Sometimes surgery

6. Epilepsy

A disorder that occurs due to abnormal electrical activity in the brain.

Symptoms:

• Convulsive seizures
• Loss of consciousness
• Tremors

Treatment:

• Antiepileptic drugs
• Surgery in some cases
• Neural stimulation

7. Tumors of the Nervous System

Can be:

• Benign
• Malignant

Their types:

• Brain tumors
• Spinal cord tumors
• Peripheral nerve tumors (like neurofibroma)

Symptoms:

• Persistent headache
• Frequent vomiting
• Blurred vision
• Convulsions
• Muscle weakness

Treatment:

• Surgery
• Radiation
• Chemotherapy

8. Immune Nerve Diseases

Like:

• Guillain-Barré Syndrome (GBS)
• Myasthenia Gravis

Symptoms:

• Severe muscle weakness
• Difficulty breathing
• Rapid fatigue

Treatment:

• Plasma exchange
• Immunoglobulins
• Medications that improve neural communication

9. Nerve Diseases Caused by Toxins

Like:

• Alcohol
• Pesticides
• Heavy metals (lead, mercury)

Symptoms:

• Tingling
• Weakness
• Balance disorder

10. Hereditary Nerve Diseases

Like:

• Charcot-Marie-Tooth disease
• Hereditary muscular dystrophy

Symptoms:

• Progressive weakness
• Foot deformity
• Loss of sensation

Sixth: Methods for Diagnosing Nerve Diseases in Detail

Diagnosing diseases of the nervous system is characterized by accuracy and progression, because nerves are complex and involve many overlapping factors. Doctors rely on medical history, clinical examination, and then a set of specialized tests that help determine the location and nature of the defect. Below are the most important diagnostic methods:

1. Taking Medical History

This is the first step taken by the doctor and includes:

• Description of symptoms: such as pain, numbness, loss of sensation, muscle weakness, convulsions.
• Time of symptom appearance and how they developed.
• Factors that increase or relieve symptoms.
• Presence of chronic diseases like diabetes, blood pressure, or autoimmune diseases.
• Medications the patient is taking.

This step helps draw an initial picture that guides the doctor to the next steps.

2. Neurological Clinical Examination

It involves assessing a set of functions:

• Reflexes: like knee and ankle, to know the integrity of peripheral nerves and spine.
• Muscle strength: to determine any weakness or loss of control.
• Sensation: testing touch, heat, and vibration.
• Motor Coordination: like walking and balance tests.
• Cranial nerve examination: like eye movement, hearing, facial movements.

The clinical examination helps determine the location of the injury: Is it in the brain? Spinal cord? Peripheral nerves?

3. Electromyography and Nerve Conduction Studies (EMG & NCS)

These are among the most important tests for diagnosing peripheral nerve diseases.

A- Electromyography (EMG)

• A fine needle is inserted into the muscle to measure electrical activity.
• Detects muscle weakness or damage to the nerves supplying it.

B- Nerve Conduction Study

• Electrodes are placed on the skin to measure the speed of neural signal transmission.
• Used to diagnose:
• Diabetic neuropathy.
• Carpal tunnel syndrome.
• Peripheral nerve inflammations.
• Nerve damage resulting from injuries.

4. Magnetic Resonance Imaging (MRI)

It is the most important test for imaging the Central Nervous System.

Used for:

• Detecting brain and spinal tumors.
• Diagnosing Multiple Sclerosis (MS).
• Determining locations of herniated discs.
• Detecting strokes or hemorrhages.
• Examining nerve inflammation or pressure inside the spine.

It is characterized by high accuracy in imaging nerves and soft tissues.

5. CT Scan

• Used for rapid detection of hemorrhage, fractures, or clots.
• Less accurate than MRI for nervous systems, but faster and used in emergency cases.

6. Cerebrospinal Fluid Analysis (Lumbar Puncture)

A sample of cerebrospinal fluid (CSF) is taken from the lower back.

Used in diagnosing:

• Meningitis.
• Autoimmune diseases like Multiple Sclerosis.
• Some types of cancer affecting the brain or nerves.
• Viral infections.

7. Blood Tests

A set of analyses are performed according to the condition, such as:

• Measuring sugar level to diagnose diabetic neuropathy.
• Analyzing vitamin B12 which directly affects nerves.
• Inflammation indicators (CRP – ESR).
• Autoimmune tests (ANA).
• Thyroid function tests.

These tests may reveal indirect causes of nerve weakness.

8. Ultrasound of Nerves

This examination has become common for evaluating:

• Nerve compression.
• Nerve inflammations.
• Nerve injuries after accidents.

It is characterized as safe, fast, and painless.

9. Balance and Gait Tests

Used to assess the functions of the cerebellum and nerves responsible for movement.

May include:

• Romberg test.
• Walking in a straight line test.
• Motor balance tests using special devices.

10. Cognitive and Memory Ability Tests

Used especially in nerve diseases that affect the brain like:

• Alzheimer's.
• Dementia of all types.
• Brain injuries.
• Strokes.

Include tests to measure:

• Memory.
• Concentration.
• Problem solving.
• Language.

Seventh: How to Maintain Nerve Health in Detail

The health of the nervous system is the foundation of our ability to move, think, feel, and emotions. Because nerves are sensitive and are quickly affected by psychological stress, poor nutrition, and vitamin deficiencies, it is important to follow effective methods to maintain them. Below are the most important methods explained in detail:

1. Proper Nutrition and Supporting Nerves with Vitamins

Nutrition plays a pivotal role in protecting and strengthening nerves, especially the following elements:

Essential Vitamins for Nerve Health

• Vitamin B12: one of the most important vitamins; its deficiency causes numbness and weakness and may lead to nerve damage. Sources: meat, eggs, dairy.
• Vitamin B6 and B1: help transmit neural signals and strengthen peripheral nerves. Their sources: whole grains, nuts, legumes.
• Vitamin D: its deficiency affects muscles and nerves and causes chronic pain.
• Omega-3 fatty acids: help regenerate nerve cell membranes. Their sources: fish, flax seeds, walnuts.
• Magnesium: reduces neural stress and prevents spasms.

Beneficial Dietary Pattern for Nerves

Includes:

• Increasing leafy vegetables.
• Eating fruits rich in antioxidants like berries and oranges.
• Reducing processed foods and hydrogenated fats.
• Drinking sufficient amounts of water to support neural functions.

2. Regular Exercise

Exercise contributes to improving blood flow to the nerves and helps regenerate them.

Benefits of Exercise for Nerves

• Increasing the secretion of chemicals that stimulate nerve growth (like BDNF).
• Reducing stress that negatively affects the nervous system.
• Improving balance and strengthening muscles supporting nerves.

Types of Beneficial Exercise

• Walking 30 minutes daily.
• Yoga and relaxation exercises.
• Swimming and stretching exercises.
• Balance exercises to strengthen peripheral nerves.

3. Avoiding Stress and Psychological Pressures

Continuous stress raises the level of the hormone cortisol which weakens nerves over time.

Effective Ways to Reduce Stress

• Meditation and yoga.
• Slow deep breathing.
• Allocating time for rest and sufficient sleep.
• Avoiding negative situations as much as possible.

4. Good Sleep

Sleep helps nerves "reset" and repair themselves.

Importance of Sleep for Nerves

• Improving memory and attention.
• Renewing neural energy.
• Reducing the likelihood of anxiety and depression.

Tips for Healthy Sleep

• Sleep 7–9 hours daily.
• Avoid screens one hour before sleep.
• Make the room dark and quiet.

5. Quitting Smoking and Reducing Caffeine

Smoking

• Causes narrowing of blood vessels, reducing blood flow to nerves and weakening them.

Caffeine

• Excessive consumption may increase stress and affect sleep, thus weakening nerves.

6. Maintaining Normal Blood Sugar Levels

Chronic high blood sugar causes direct damage to peripheral nerves (diabetic neuropathy).

Ways to Control Sugar

• Healthy diet.
• Exercising.
• Regular monitoring of sugar level.
• Adherence to medications if diabetic.

7. Avoiding Neurotoxins

Some substances directly harm nerves, such as:

• Alcohol.
• Industrial chemicals.
• Inhaling pesticides.
• Some narcotic drugs.

They should be avoided or protective means should be used when dealing with them.

8. Protecting Nerves from Physical Injuries

• Using protective tools during work.
• Avoid sitting for long periods in a way that pressures nerves like wrong sitting that causes sciatica.
• Avoid sleeping on the hand or arm for a long time.

9. Maintaining a Healthy Weight

Excess weight increases pressure on nerves, especially nerves of the feet and back, and may cause nerve inflammation or sciatica.

10. Regular Medical Follow-up

Regular visits to the doctor help in:

• Detecting any vitamin deficiency.
• Early diagnosis of neuropathy.
• Evaluating nerves in patients with diabetes, thyroid, or blood pressure.

Eighth: General Tips for Strengthening Nerves in Detail

Strengthening nerves does not depend on one factor only, but rather a set of healthy, nutritional, and psychological habits that work together to improve the performance of the nervous system and protect it from weakness or damage. Below is a comprehensive set of practical tips beneficial for all ages:

1. Eating Foods That Strengthen Nerves

Nerves need specific nutritional elements to support their functions and regeneration, most notably:

Foods Rich in B Vitamins

They are the most important vitamins for nerve health:

• Whole grains (oats, wheat).
• Chicken and fish.
• Nuts (almonds, walnuts).
• Legumes (lentils, beans).

Foods Rich in Omega-3

Work on strengthening neural connections:

• Salmon, tuna, sardines.
• Flax seeds, olive oil.
• Walnuts.

Foods Rich in Magnesium

To prevent spasms and calm nerves:

• Bananas.
• Spinach.
• Avocado.
• Legumes and nuts.

Antioxidants

Protect nerves from inflammation:

• Berries.
• Oranges and lemons.
• Green vegetables.

2. Regular Exercise

Exercise activates blood circulation, and increases the arrival of oxygen and nutrition to the nerves.

Best Types of Exercise for Nerves

• Daily walking 30 minutes.
• Yoga to calm the nervous system.
• Swimming to strengthen muscles and reduce pressure on the spine.
• Flexibility and stretching exercises to reduce neural tension.

Consistency is more important than duration; even 10 minutes daily have a great impact.

3. Good Sleep

Sleep is the opportunity during which the body "repairs" nerves and rebuilds nerve cells.

Tips for healthy sleep:

• Sleep 7–9 hours.
• Avoid caffeine 6 hours before sleep.
• Turn off screens one hour before sleep.
• Keep the room quiet and dark.

4. Reducing Stress and Psychological Pressure

Stress is the primary enemy of nerves, because it raises the hormone cortisol which tires the nervous system.

Effective ways to reduce stress:

• Meditation and deep breathing.
• Reading Quran or listening to calm sounds.
• Sitting in quiet places.
• Practicing favorite hobbies.

5. Quitting Smoking and Reducing Alcohol and Caffeine

Smoking:

• Causes narrowing of blood vessels and reduces blood flow to nerves.

Alcohol:

• Causes neuropathy when excessive.

Excessive caffeine:

• Causes neural tension and insomnia.

6. Avoiding Long Sitting or Standing

Long sitting pressures nerves of the back and pelvis and may cause:

• Sciatica.
• Numbness of extremities.
• Weakness of peripheral nerves.

Practical tip:
Stand and move every 40 minutes for just two minutes.

7. Maintaining Blood Sugar Within Normal Range

Chronic high blood sugar is the primary cause of neuropathy.

For prevention:

• Reduce white carbohydrates.
• Practice daily walking.
• Regularly monitor sugar measurements if at risk.

8. Drinking Sufficient Water

Dehydration affects the speed of neural signal transmission.

Appropriate amount:

From 6–8 cups daily (may increase with heat and exercise).

9. Massaging Muscles and Nerves

Massage improves blood flow to nerves and reduces spasms.

Best types of massage:

• Foot massage (beneficial for activating peripheral nerves).
• Neck and back massage.
• Using warm oils like olive oil or peppermint oil.

10. Avoiding Excess Weight

Excess weight increases pressure on nerves of the spine and joints.

For weight control:

• Healthy food.
• Regular physical activity.
• Reducing sugar and fats.

11. Focusing on Correct Body Posture

Bad postures cause pressure on nerves.

Posture correction tips:

• Sitting with a straight back.
• Not bending the neck towards the phone for a long time.
• Raising the computer screen to eye level.

12. Maintaining Mineral Balance in the Body

Potassium or calcium deficiency causes weakness and neural spasms.

Important sources:

• Yogurt and cheese (calcium).
• Potatoes and bananas (potassium).

13. Avoiding Exposure to Extreme Cold

Cold causes contraction of blood vessels and weakens blood flow to nerves.

Tip:

Always warm hands and feet in winter.

14. Performing Regular Check-ups

Especially for those suffering from:

• Thyroid problems.
• Diabetes.
• Vitamin B12 deficiency.
• Nerve inflammations.

Early examination prevents complications.

Ninth: Conclusion

Nerves form the basic control network inside the human body, and are responsible for every movement, feeling, and response. Understanding the nature of the nervous system and its working methods helps in preventing its serious diseases and maintaining general body health. Caring for nerves is not an option, but a necessity to ensure a healthy and stable life.