MTHFR Part 2: Methylenetetrahydrofolate Reductase (MTHFR)

Imagine your DNA is like a cookbook with tons of recipes (your genes). Methylation is like putting sticky notes on certain recipes.

 

 

So let’s unpack the test a bit:

What is Methylation?

Methylation is a natural process in the body where tiny chemical tags called “methyl groups” are added to DNA. These methyl groups are like little on/off switches that can turn genes up or down—basically, they control whether a gene gets activated or silenced.

To make it simpler: Imagine your DNA is like a cookbook with tons of recipes (your genes). Methylation is like putting sticky notes on certain recipes. If you put a sticky note on a recipe, it tells the kitchen (your body) not to use that recipe right now. If there’s no sticky note, the kitchen can make that dish (gene) as usual.

This process is important because it can affect things like how you develop, your health, and even whether you’re at risk for certain diseases.

When optimal methylation occurs, it has a significant positive impact on many biochemical reactions in the body that regulate the activity of the cardiovascular, neurological, reproductive, and detoxification systems, including those relating to:

How do they get the results, and why?

Using the buccal swab (cheek swab) sample, they then put it through a process called the Polymerase Chain Reaction (PCR), which copies the DNA of your genes many times over so that they can generate sufficient quantities to analyse the genetic material. They then identify unique DNA sequences in some of the genes. Certain changes (polymorphisms) in these genes have been studied in detail, with evidence that correlates these polymorphisms with an individual’s risk of developing certain chronic disease conditions or altered metabolic processes. Having identified the presence or absence of these polymorphisms, we are able to qualitatively assess particular areas of health risk related to the specific genes. To make a holistic assessment of health risks, environmental factors (diet and lifestyle) need to be considered in conjunction with the accompanying genetic profile.

🧬 Essential Vitamins and Minerals for Methylation

🔹 Methyl Donors & Core Nutrients

These nutrients directly donate methyl groups or support enzymes involved in methylation.

Nutrient Role in Methylation Food Sources
Folate (B9) Provides methyl groups (as 5-MTHF) via the folate cycle Leafy greens, legumes, liver, asparagus
Vitamin B12 Accepts methyl from 5-MTHF → transfers it to homocysteine Meat, eggs, dairy, nutritional yeast
Vitamin B6 Required in homocysteine → cysteine conversion Poultry, bananas, spinach, sunflower seeds
Choline Provides methyl groups (via the betaine pathway) Eggs, beef liver, soy, quinoa
Betaine (TMG) Supports alternative remethylation of homocysteine Beets, spinach, whole grains
Methionine Essential amino acid & methylation precursor (→ SAMe) Fish, meat, dairy, sesame seeds

🔹 Co-factors for Enzyme Function

These help methylation-related enzymes work efficiently.

Nutrient Key Role/Enzyme Affected Food Sources
Zinc Cofactor for MTR, supports DNA methylation Oysters, pumpkin seeds, lentils
Magnesium Supports ATP production and SAMe-dependent reactions Nuts, seeds, leafy greens, and whole grains
Vitamin B2 (Riboflavin) Helps regenerate 5-MTHF, supports the MTHFR enzyme Eggs, dairy, almonds, and mushrooms
Vitamin B1 (Thiamine) Involved in energy production that powers methylation Legumes, nuts, pork, and whole grains
Iron Required for BH4 production and neurotransmitter synthesis Red meat, spinach, and lentils
Molybdenum Supports sulfite oxidation after CBS activity Legumes, grains, nuts
Selenium Antioxidant defence supports glutathione function Brazil nuts, seafood, and sunflower seeds

🧠 Antioxidants & Supportive Nutrients

These help protect the methylation cycle from oxidative stress.

Nutrient Function Food Sources
Vitamin C Recycles tetrahydrobiopterin (BH4), supports detox enzymes Citrus, bell peppers, broccoli
Vitamin E Protects methylation-related enzymes from damage Nuts, seeds, spinach, plant oils
Glutathione Final product of transsulfuration (post-methylation support) Avocados, asparagus, whey, spinach

⚠️ Genetic Considerations

  • If you have MTHFR mutations, you may need methylated folate (5-MTHF) instead of folic acid.

  • COMT variants can affect dopamine breakdown → may need lower doses of methyl donors to avoid overstimulation.

  • CBS upregulation increases sulfur compounds → may benefit from low sulfur foods and molybdenum.

 

The results can have one of 5 outcomes:

 

PLEASE NOTE: ANY VIEWS REGARDING THE RESULTS ARE MY UNDERSTANDING AND DO NOT SERVE AS PROFESSIONAL ADVICE. THE TREATMENT RECOMMENDATION IS STRICTLY RELATED TO ALEX’S RESULTS AND NOT MEANT FOR SELF-TREATMENT. ALWAYS SPEAK TO YOUR HEALTHCARE PROVIDER BEFORE STARTING ANY TREATMENTS.

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