Dr. Daniel Stickler, MD
Co-Founder & Chief Medical Officer
“We’re not treating disease. We’re designing optimal function. That’s a completely different orientation.”
Free Class · Detoxification Pathways · Mosaic Biodata Institute
74% of people carry an MTHFR variant. Only about 20% actually under-methylate.
Methylation is the most hyped and most misunderstood topic in genetic coaching. This free certification-level lesson gives you the multi-gene framework that separates a real methylation problem from MTHFR myth, and the conservative way to act on it.
Lesson 8.3: Methylation (One-Carbon) · 30–45 minutes · Full curriculum depth · Free
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Who this lesson is for
For practitioners who want the science behind what they already see.
The pattern
You have clients convinced their MTHFR “mutation” is the root cause of their fatigue, anxiety, or brain fog. Maybe a previous practitioner put them on high-dose methylfolate and they felt worse, not better. The MTHFR conversation keeps getting louder online while the science underneath it gets blurrier.
The genetics
MTHFR is real, but it is one player in a multi-gene system. MTRR governs the B12-dependent handoff back to methionine. BHMT runs the betaine backup route. DHFR processes synthetic folic acid. FOLR1 transports folate into cells and the brain. COMT sets how fast methyl groups get spent, and it is the safety check before SAM-e. CBS routes homocysteine toward glutathione. Roughly 74% of people carry an MTHFR risk allele, yet only about 20% actually under-methylate, because the rest of the network compensates.
Who it fits
This lesson is for functional-medicine practitioners, health coaches, and nutrition professionals who want to apply methylation genetics the way credible clinicians do: conservatively, across the full gene network, and correlated to clinical signs rather than a single variant.
What you’ll learn
Detoxification Pathways at certification level. No watering down.
Lesson 8.3 from the Mosaic Epigenetics Coaching Certification: same content, depth, and standard as every lesson in the program.
The one-carbon system, not one gene
How the folate cycle, methionine cycle, transsulfuration pathway, and BH4 branch interconnect, and why disruption in one ripples through the others. This is why single-gene analysis fails.
Why MTHFR alone is insufficient
The multi-gene network (MTRR, BHMT, DHFR, FOLR1, CBS, and COMT) that actually determines methylation status, and the insight that anchors every client conversation: 74% carry a variant, only about 20% under-methylate.
Under- vs over-methylation
The opposite symptom profiles and the opposite interventions. Why the antihistamine-tolerance check and the seasonal-allergy history are your fastest clinical differentiators, and why the genetics alone can mislead you.
COMT: the safety check before SAM-e
Why a slow-COMT client given SAM-e can spike into anxiety and insomnia, and how to avoid the most common avoidable harm in methylation work.
The BH4 link to mood and sleep
How the MTHFR 1298C variant reduces BH4 recycling and downstream serotonin, dopamine, and melatonin, and what that means for clients with anxiety or sleep complaints.
A conservative intervention framework
Start low (around 200 mcg methylfolate or 200 mg SAM-e, never both at once), titrate by response, and use niacin as the over-methylation tool. Methylation status is clinical, not genomic.
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