“Fuel Your Cells, Methylate to Thrive – The Methionine Cycle Keeps You Alive!”

 

 

Before we start on the Methionine Cycle, let’s recap a bit…

We saw that your B vitamins are really important in keeping the lights on and the cells doing what they are supposed to.

The vitamins needed in the Folic Acid/ Folate cycle are B9( Folic Acid), B2 (Riboflavin), B3 (Niacin) and Vitamin D.

The vitamin needed in the Methionine Cycle is B6 (Pyridoxine) because it helps the liver detox properly through the Transsulfuration Cycle.

And the bridge between the cycles is run by B12 (Cyanocobalamin/ methylcobalamin).

The Methionin Cycle

The Methionine Cycle is how your body uses a nutrient called methionine (from protein foods like meat, eggs, and legumes) to:

• Make SAMe (S-adenosylmethionine) – a major “methyl donor” that helps with brain function, mood, detox, and DNA repair.

• Recycle homocysteine – a byproduct that can be harmful if it builds up, but is usually recycled back to methionine or turned into something useful (like glutathione, a powerful antioxidant).

🧪 Basic Steps:

1. Methionine → SAMe
   SAMe gives away a methyl group to support many processes (like detox and brain health).

2. SAMe → SAH → Homocysteine
   After donating its methyl group, SAMe becomes homocysteine.

3. Homocysteine is recycled in two ways:

   • Back into methionine (needs B12 and folate).

   • Or into glutathione via the transsulfuration pathway (needs vitamin B6).

🌿 Why It Matters:

If this cycle isn’t working well (due to stress, poor diet, or genetics like MTHFR mutations), you may have trouble with:

• Detoxification

• Mood balance

• Energy

• Heart health (high homocysteine = risk)

 

 

Traditionally, the methylation pathways have focused on the Folate and Methionine cycles, with the Urea, Citric Acid, and BH4 (Tetrahydrobiopterin) cycles supporting them. However, these cycles can also function independently. SAMe interacts with methyl donors influenced by BH4, MTHFR A1298C and C677T variants, as well as NOS (Nitric Oxide Synthase). While CBS is a key output pathway, others like BHMT, MTR/MTRR, and SHMT provide alternative routes when certain steps are blocked.

The Methionine Cycle includes five interconnected pathways. Two of the most critical are Homocysteine metabolism and the Transsulfuration pathway—both of which are heavily regulated by Vitamin B6.

We will look at the methionine cycle – BHMT, ACE and ACHY and the transsulfuration cycle – CBS and Suox…

 

 

 

Methionine Metabolism and Activated Methyl Cycle | Pathway and Purpose – www.youtube.com/@jjmedicine

 

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.