The MTHFR gene plays a central role in how your body processes folate (vitamin B9) and regulates levels of homocysteine, an amino acid naturally produced during metabolism. While both are part of normal physiology, disruptions in levels can have a negative effect on your health.
What is the MTHFR gene?
The MTHFR gene provides instructions for making an enzyme that helps convert folate into its active form, known as 5-Methyltetrahydrofolate. This active form is required for a process called methylation, which is involved in DNA repair, detoxification, and neurotransmitter production.
There are two copies of the MTHFR gene, C677T and A1298C. Some people carry mutations to these gene copies, which lead to a reduction in the enzyme needed to convert folate into its active form. This ultimately can lead to elevated homocysteine levels.
What is homocysteine, and why does it matter?
Homocysteine is a normal byproduct of protein metabolism, but it needs to be recycled efficiently. When MTHFR function is reduced due to a mutation in the gene copies, homocysteine can build up in the blood—a condition called Hyperhomocysteinemia.
Elevated homocysteine has been associated with:
- Increased risk of cardiovascular disease (heart attack, stroke)
- Blood clotting issues and increased miscarriage risk
- Pregnancy complications (e.g., neural tube defects)
- Potential links to cognitive decline and mood disorders
It’s important to keep perspective: mildly elevated levels are common, and risk depends on multiple factors, including diet, lifestyle, and other genes.
What can you do to lower homocysteine?
The good news is that homocysteine levels are often very responsive to nutritional and lifestyle changes. We recommend the following:
1. Increase active form B vitamins
Key nutrients involved in homocysteine metabolism include:
- Folate, particularly folinic acid and methyl folate.
- Vitamin B12, particularly methylcobalamin
- Vitamin B6, particularly Pyrodoxial 5 Phosphate
- Vitamin B2, particularly Riboflavin 5 Phosphate
These help convert homocysteine back into methionine or into other harmless compounds. It is the active form of these B vitamins that are essential as they get around the need to convert inactive B vitamins, such as folic acid, to active forms, such as methyl folate.
2. Eat a folate-rich diet
Focus on foods naturally high in folate:
- Leafy greens (spinach, kale)
- Legumes (lentils, chickpeas)
- Asparagus, broccoli, avocado
It’s best to do this with guidance from a healthcare provider, especially if you’re testing or managing elevated levels.
3. Address lifestyle factors
- Quit smoking
- Limit excessive alcohol intake
- Exercise regularly
- Manage stress
These all influence homocysteine metabolism.
4. Test and monitor
A simple blood test can measure homocysteine levels. If elevated, follow-up testing can help track improvements after interventions.
A word of caution
This should always be done under the guidance of a healthcare professional who is familiar with methylation issues. Self supplementation can lead to dangerously high levels of vitamin B6 and B12, over methylation, or negative effects on homocysteine levels. Nothing in this article is intended to provide advice on the diagnosis and treatment of methylation concerns.
Summary
MTHFR gene variants can affect how efficiently your body processes folate and regulates homocysteine, but they’re just one piece of the puzzle. With the right nutrition and lifestyle adjustments, most people can effectively manage homocysteine levels and support overall health. Understanding how MTHFR mutations interact with other genes is important to understanding how to effectively manage it.
If you are looking to reduce homocysteine, regulate MTHFR gene mutations or are interested in getting tested for this, please contact the clinic on 03 9337 8572 to find out more or book an appointment with Robert or our naturopathic team.
B.C.M (Hons), C.Clin.Prac (China), C.Toyohari. Registered Acupuncturist and Herbalist. Integrative Natural Medicine Practitioner.
Robert is a passionate and warm practitioner who has an extensive knowledge of integrative and functional natural medicine. He is down to earth and has an interest in organic foods, gardening and sustainable living. With over 17 years of experience, he is renowned for being very thorough by both fellow practitioners and patients alike.