Introduction

Every year on 3 December, the world celebrates the International Day of Persons with Disabilities — a reminder that health, dignity, and independence must be accessible to all.

But here’s an important truth:
People with disabilities often face more complex health journeys, more medications, more nutritional challenges, and a higher risk of treatment side effects.

This is not because their bodies are “weaker.”
It’s because their biological and medical needs are unique — and deserve personalised care rather than a one-size-fits-all approach.

This is where PGx (pharmacogenomics) and NGx (nutrigenomics) can play a powerful role.

Personalised genetics offers clarity for:

• Children with developmental challenges
• Adults with mobility or sensory disabilities
• Individuals with neurological differences
• People who rely on long-term medications
• Those experiencing chronic inflammation or fatigue
• Individuals with emotional/mental health vulnerabilities

Today, we explore how genetic insights can help support more inclusive healthcare in Malaysia.

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1. Many People With Disabilities Take Multiple Medications

For individuals with physical, neurological, or sensory disabilities, long-term medicine use is common:

• Pain medications
• Muscle relaxants
• Antidepressants
• Anti-anxiety medications
• ADHD medication
• Sleep aids
• Anti-epileptics
• Stomach medication
• Anti-inflammatories

But medication response varies significantly between individuals.

This is why some experience:

• Excessive drowsiness
• Paradoxical reactions (opposite of expected)
• Strong side effects
• Rapid medication wear-off
• Poor symptom control
• Challenges finding “the right dose”

And this is where PGx becomes meaningful.

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2. PGx Helps Improve Medication Safety And Comfort

Pharmacogenomics identifies how a person metabolises medicine:

✔ Too Fast (ultrarapid metaboliser)

Drug may not reach effective levels → weak results.

✔ Too Slow (poor metaboliser)

Drug accumulates → higher risk of side effects, dizziness, irritability.

✔ Intermediate

Sensitive to dosage → needs careful adjustment.

✔ Normal

Expected response to standard doses.

For people with disabilities, this reduces:

• Medication trial-and-error
• Unnecessary side effects
• Over-sedation
• Poor symptom control
• Emotional stress

Better clarity = better quality of life.

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3. PGx Matters Especially in Neurological & Developmental Conditions

People with conditions such as:

• Autism spectrum
• ADHD
• Down syndrome
• Cerebral palsy
• Epilepsy
• Chronic pain disabilities
• Mental health disabilities

may require medications that strongly interact with genetics, such as:

• SSRIs
• SNRIs
• Antipsychotics
• Stimulants
• Anti-epileptics
• Painkillers
• Opioids
• Benzodiazepines

PGx helps clinicians personalise:

• Type of medication
• Dose
• Timing
• Safety considerations

It is not a replacement for medical diagnosis —
but it is a powerful tool that reduces uncertainty.

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4. NGx Helps Support Energy, Mood, and Inflammation

People with disabilities often face challenges like:

• Chronic inflammation
• Low energy
• Digestive issues
• Sensory-driven eating patterns
• Vitamin D deficiency
• Magnesium-related muscle tension
• Omega-3 needs for cognitive support
• Emotional dysregulation due to stress sensitivity

NGx provides clarity on:

✔ Omega-3 EPA conversion

Supports brain health, inflammation modulation, mood stability.

✔ Vitamin D activation

Supports immune system and energy.

✔ Magnesium absorption

Influences muscle relaxation, anxiety, and sleep quality.

✔ Glucose response & appetite traits

Helps to personalise diet for better stability.

✔ Sweet vs bitter sensitivity

Important for children with sensory-based eating challenges.

NGx does not diagnose disabilities —
it helps personalise nutrition for better daily functioning.

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5. Emotional Resilience & Stress Sensitivity (COMT Gene)

Many individuals with disabilities experience:

• Higher stress
• Emotional overload
• Sensory overwhelm
• Difficulty calming down
• Mood swings

The COMT gene affects how quickly the brain clears stress-related chemicals.

People with slower COMT may:

• Feel emotions more intensely
• Take longer to recover from stress
• Be more sensitive to noise, criticism, or changes
• Experience anxiety-like symptoms

Understanding this helps caregivers:

• Tailor routines
• Avoid overstimulation
• Improve sleep and rest patterns
• Offer healthier coping techniques

The goal is understanding, not labelling.

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6. A Malaysian Case Example (Anonymised)

A 12-year-old boy with developmental delay had:

• Difficulty tolerating ADHD medication
• Big emotional swings
• Poor sleep
• Sensitivity to certain foods
• Frequent stomach upset

PGx + NGx results revealed:

• Poor metaboliser for certain stimulants
• Low magnesium absorption
• Low EPA conversion
• Slow COMT (high stress sensitivity)
• Sweet taste sensitivity (affecting diet variety)

Changes made:

• Adjusted medication type through paediatrician
• Added magnesium-rich food
• Increased direct EPA
• Built calmer nighttime routines
• Used sensory-friendly meal plans

After 6–8 weeks, teachers noticed:

• Improved focus
• Better sleep
• More stable mood
• Fewer complaints of stomach discomfort

The goal wasn’t perfection —
it was support and personalised understanding.

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7. Genetics Supports Caregivers Too

Parents, siblings, and caregivers often experience:

• Burnout
• Emotional fatigue
• Stress
• Sleep disruption

Genetic insights can guide personalised:

• Stress management
• Nutrition
• Energy support
• Supplementation

When caregivers are supported, the person they care for benefits too.

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Conclusion

On this International Day of Persons with Disabilities, we are reminded:

Every body is unique.
Every brain is unique.
Every health journey is unique.

Personalised genetics doesn’t label people —
it liberates them.

It replaces trial-and-error with clarity.
It replaces overwhelm with understanding.
It replaces guesswork with personalised support.

Inclusive healthcare means acknowledging that one-size-fits-all medication and nutrition doesn’t work for everyone — and genetics helps bridge that gap.