MTHFR, COMT, and Mental Health: Why Your Genetics Matter More than "They" Think
- Joannie Hambel
- Apr 24
- 3 min read
Updated: Jun 30
This is one of the most common questions I get
Patients will come in and say:
“I’ve heard about MTHFR… or COMT… do I need to worry about that?”
And the answer is not “yes” or “no.”
The better answer is:
It depends on how your body is using the tools it was given.
Quick recap: what genes actually do
Before we go further, let’s simplify this.
Your genes are like instructions.
They tell your body how to:
process nutrients
regulate stress
make and break down brain chemicals
They don’t determine everything.
But they do set the foundation for how your system functions.
Why this matters for mental health
Your brain relies on a very specific balance of chemicals to feel stable.
Things like mood, focus, motivation, and stress response all depend on how well your body can:
create neurotransmitters
clear them appropriately
regulate your nervous system
Genes like MTHFR and COMT play a role in these processes.
What is MTHFR?
Methylenetetrahydrofolate reductase (MTHFR) is a gene that helps your body process folate (a B vitamin-B9 to be exact).
Folate is essential for:
making neurotransmitters like serotonin and dopamine
supporting detoxification
regulating mood and energy
If this pathway is less efficient, your body may have a harder time:
producing neurotransmitters
handling stress
maintaining stable mood
This doesn’t mean something is “wrong.”
It means your body may need more targeted support.
What is COMT?
Catechol-O-methyltransferase (COMT) is a gene involved in breaking down certain brain chemicals—especially dopamine.
Dopamine influences:
motivation
focus
emotional intensity
stress response
Some people break dopamine down quickly.Others break it down more slowly.
This matters because:
If dopamine is cleared too quickly → you may feel low motivation, brain fog, or fatigue
If it is cleared more slowly → you may feel more sensitive to stress, more reactive, or prone to anxiety
Again, neither is “bad.”
It just changes how your system responds.
Why this information actually matters
In traditional psychiatry, people are treated the same way—regardless of how their body works.
But if your brain processes stress and neurotransmitters differently, your response to treatment may also be different.
This can show up as:
feeling “too sensitive” to medications
inconsistent response to supplements
anxiety that feels disproportionate to the situation
difficulty finding the right treatment
When you understand your genetic patterns, these responses start to make sense.
Genetics are not your destiny
This is important.
Your genes are not a diagnosis.
They are a starting point.
They tell us:
where your system may need more support
how your body is likely to respond under stress
what pathways may be under more strain
But they don’t act alone.
Your environment shapes the outcome
Your genetics determine the tools you have.
Your environment determines how those tools are used.
This includes:
nutrition
stress levels
sleep
toxin exposure
hormone changes
life experiences and trauma
gut flora
Two people with the same genetic pattern can feel completely different—depending on how their body has been supported.
Why symptoms develop
When certain pathways are under-supported, your body adapts.
That adaptation can show up as:
anxiety
depression
irritability
fatigue
feeling overwhelmed or overstimulated
These symptoms are not random.
They are the result of how your system is functioning.
Why testing can be helpful
Genetic testing gives us a starting point.
It helps us understand:
how your body processes key nutrients
how your brain handles neurotransmitters
where your system may need support
But genetics are only one piece.
To fully understand what’s happening, we often look at how your body is functioning in real time—through metabolic and nutrient testing as well.
What treatment looks like with this information
When we understand your genetic tendencies, treatment becomes more precise.
Instead of guessing, we can:
support specific pathways
choose supplements more intentionally
avoid what may overwhelm your system
tailor treatment to how your body actually works
This often leads to:
more consistent results
fewer side effects
better long-term stability
The goal is not perfection
It’s alignment.
When your treatment matches your biology, your system doesn’t have to work as hard to stay balanced.
And that’s where change becomes sustainable.
Work with me
If you’ve been trying to figure out your mental health and still feel like something is missing, your genetics may be part of the picture.
Not as a label—but as a guide.
If you’re ready to understand how your body works and build a plan that actually supports it:
Final perspective
You are not broken.
Your body is responding based on the tools it has—and how those tools have been used over time.
When you understand that, everything starts to make more sense.
Disclaimer: This content is for educational purposes only and is not a substitute for personalized medical or psychiatric care. Individual needs vary. Please consult with a qualified healthcare provider before making changes to your treatment.
