Q&A. How Is Methylation Connected to Mental Health?

In this Q&A episode, we explore how methylation affects mental health, including its impact on neurotransmitters like dopamine, serotonin, and norepinephrine. Learn how the methylation cycle regulates gene expression, hormone balance, histamine clearance, and stress resilience — and why low folate, vitamin B12, B6, and B2 can contribute to symptoms such as anxiety, depression, brain fog, fatigue, insomnia, and “wired but tired” patterns.

We also discuss slow COMT activity, the link between estrogen and histamine, and how imbalances can drive mood swings, palpitations, and poor stress tolerance. Discover how real-time methylation testing (Mood Sense saliva swab) can provide personalised insights, plus how to book a Zoom consultation for deeper support.

If you're struggling with histamine intolerance, hormone imbalance, anxiety, or low mood, this episode connects the biochemical dots.

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Transcript

0:00

Hi everyone. Today's question is how is methylation connected to mental health? Now, methylation is a biochemical process happening constantly in your body. At its simplest, it involves transferring a small chemical group called a methyl group onto other molecules and that small action regulates enormous systems. It affects gene expression, neurotransmitter production, neurotransmitter breakdown, hormone metabolism, histamine clearance. So when we talk about anxiety, depression, insomnia, irritability, low motivation, mood swings. Methylation is directly involved. So let's start with neurotransmitters. So these are your brain chemicals, including serotonin, dopamine, norepinephrine, and actually histamine is also a neurotransmitter and they require nutrients to be produced, including folate. Vitamin B12, B6, B2. These all feed into the methylation cycle and one of the major outputs of this methylation cycle is Sam E, which is the universal methyl donor. Sam E's required for both the production and regulation of neurotransmitters. So if methylation is sluggish, often referred to as underm methylating, you might see symptoms such as low mood, low motivation, brain fog, fatigue, possibly elevated histamine, reduced stress, resilience. That methylation isn't just about making neurotransmitters. It's also about breaking them down. And this is where the COMT, the Catechol-O-methyltransferase enzyme comes into play as it breaks down dopamine and norepinephrine, also called noradrenaline. It also breaks down estrogen, which is important, and I'll get to that soon. So interestingly, some people have genetically, a slow COMT enzyme. That enzyme just doesn't work effectively. So what is actually happening is a few things. You're not clearing your dopamine and norepinephrine, so they build up and cause symptoms, which I'll get to in a minute. But what also happens is, if the COMT enzyme is not working well, it can cause your methyl groups to build up. And methyl groups, as we know, help make dopamine and norepinephrine. So it's like a double whammy. And you can get symptoms such as anxiety racing, thoughts, inattention, insomnia, heart palpitations, feeling wired, but tired, and panic like symptoms. Now estrogen is also important in this whole picture because COMT also breaks down estrogen, and you might not even have a slow COMT gene mutation. You can just be so full of estrogen that estrogen is just slowing COMT activity. And then again, you can have a buildup of these neurotransmitters. So it's like a double whammy if you've got slow COMT and if you've got high estrogen. Now let's layer in histamine. As I said at the beginning, histamine is also a neurotransmitter. It's involved in memory, alertness, and wakefulness. And one of the pathways that clears histamine in the brain relies on methylation via enzyme called the histamine in methyl transferase enzyme. And if you're under-methylating, then you potentially have a slower ability to clear your histamine. But there are many reasons you can have high histamine in the brain, not just because of slow methylation, if you're interested in learning about that. I think it's my second episode in this podcast talks about all the causes of high histamine. And also histamine can really increase estrogen. Histamine increases estrogen, estrogen increases histamine. And we can see that methylation is involved in both the clearance of histamine and the breakdown of estrogen. So when we are kind of looking at estrogen, COMT, under-methylating, over-methylating, histamine, it becomes a bit complicated. But the good news is now when it comes to methylation. You can actually test your methylation in real time to see what is actually happening. We don't rely on gene reports because you can have many genes that say that you're under methylating, but in fact, in real time, you're over methylating. That test is called the Mood Sense test. You can find it via my website, so it's joanne kennedy naturopathy.com. Just go to methylation test. You can get a discount. I can't remember what the discount code is, but if you purchase it via my website, you can get a discount. And you can actually do that test. It's a at home saliva swab test to actually see what your methylation is doing in real time. That's just part of the picture. We need to be working on your nutrients levels, your nutrient absorption, your gut health, your estrogen levels, your estrogen clearance, your sleep quality, your stress load, any other histamine symptoms, and why are you getting high histamine symptoms. But knowing what your methylation via that mood sense test is a really great place to start. And then if you're interested in working with me to get all of the rest of the stuff sorted, then I'm absolutely here to help. We see patients globally online via Zoom, and you could easily book yourself in for an appointment via my website, which is joanne kennedy naturopathy.com. So thank you for joining me. I hope you found this episode beneficial. Be sure to subscribe to the histamine well so you don't miss an episode. Leave a review and you can also share this episode with someone who could benefit. If you have any questions you'd like answered or have a topic you'd like me to discuss, please go to my website, joanne kennedy naturopathy.com, where you can provide us with that information. Until next time, take care and be well.