Mar 23 • Articles & Studies
TMG, Creatine, Glycine, Methylation, Fasting and fat loss - Super Science
The Hidden Metabolic Intersection
TMG • Creatine • Glycine • Fasting • Fat Loss • Methylation
Most weight-loss discussions focus on calories, macros, or exercise.
But one of the most overlooked drivers of fat loss success is methylation capacity.
For individuals with MTHFR variants or elevated homocysteine, impaired methylation can quietly interfere with:
- fat metabolism
- detoxification
- liver function
- muscle preservation
- metabolic flexibility
This is where nutrients like TMG, creatine, and glycine intersect with fasting and body composition.
Step 1: Methylation Is a Metabolic Engine
Methylation is the biochemical process that transfers methyl groups (–CH₃) between molecules.
It regulates:
• DNA expression• neurotransmitters• detox pathways• lipid metabolism• hormone signaling• mitochondrial energy production
One of the core reactions in this cycle converts homocysteine back to methionine:
TMG -> Methionine
Methionine is then converted into SAMe (S-adenosyl-methionine), the body’s primary methyl donor.
SAMe drives hundreds of metabolic reactions, including those involved in fat metabolism and liver function.
Step 2: Why High Homocysteine Can Make Fat Loss Harder
When methylation is impaired, homocysteine accumulates.
Elevated homocysteine is associated with:
• impaired detoxification• fatty liver development• mitochondrial stress• chronic inflammation• impaired lipid metabolism
These conditions can make fat loss more difficult because the body must process large amounts of metabolic byproducts during weight loss.
When stored fat is released, the liver must handle:
- fatty acids
- oxidized cholesterol
- inflammatory lipids
- fat-stored toxins
If methylation capacity is insufficient, fat mobilization slows.
This is one reason individuals with MTHFR polymorphisms often struggle with:
- stubborn weight loss
- fatigue during dieting
- detox symptoms during fasting
Step 3: Creatine Is a Massive Methyl Consumer
Few people realize that creatine metabolism is one of the largest drains on the methylation system.
The body synthesizes creatine from glycine and arginine, but the final step requires a methyl donation.
Guanidinoacetate + SAMe -> Creatine
Research suggests creatine synthesis consumes up to 40–50% of total methylation capacity.
This becomes relevant during:
- exercise
- muscle building
- metabolic stress
- fasting
Supplemental creatine can actually reduce methylation demand by providing the end product directly.
This preserves SAMe for other metabolic functions.
Step 4: TMG Restores the Methylation Cycle
Trimethylglycine (betaine) acts as a methyl donor through the BHMT pathway.
Its key reaction:
Homocysteine + TMG -> Methionine
This reaction:
• lowers homocysteine• regenerates methionine• restores SAMe production
Which supports:
- detoxification
- lipid metabolism
- liver function
- neurotransmitter balance
TMG also has a lipotropic effect, meaning it helps the liver process and export fat.
This makes it particularly useful for:
- fatty liver
- insulin resistance
- metabolic syndrome
Step 5: Glycine Supports Detox and Mitochondrial Function
While TMG supports methylation, glycine supports detoxification and cellular resilience.
One of its most important roles is building glutathione.
Glutamate + Cysteine + Glycine -> Glutathione
Glutathione is the body’s primary antioxidant and detox molecule.
During fat loss and fasting, glutathione demand increases because the body is metabolizing large amounts of stored fat.
Glycine also participates in glycine conjugation, a phase-II detox pathway used to neutralize:
- bile acids
- benzoates
- environmental toxins
Without adequate glycine, detoxification slows and metabolic stress increases.
Step 6: What Happens During Fasting
Fasting triggers a series of metabolic shifts:
0–24 hours
- glycogen depletion
- gluconeogenesis increases
24–48 hours
- ketones begin rising
- fat mobilization increases
48–72 hours
- ketosis dominant
- growth hormone increases
- fat oxidation peaks
During the early phase of fasting, the body produces glucose from amino acids.
Amino Acids -> Pyruvate -> Glucose
If amino acids are unavailable, the body may break down skeletal muscle.
Supplemental glycine can partially supply the amino acids required for gluconeogenesis, helping preserve muscle while ketosis ramps up.
Step 7: The “Methylation Drain” During Fat Loss
Rapid fat loss creates an unusual metabolic burden.
The body must simultaneously:
- Burn fat
- Detox stored compounds
- Maintain muscle mass
This dramatically increases demand for:
• methylation• glutathione• mitochondrial antioxidants
When these systems cannot keep up, the body may down-regulate fat mobilization, leading to:
- weight-loss plateaus
- fatigue
- headaches
- poor sleep
- irritability
This phenomenon is sometimes referred to as a methylation bottleneck.
Step 8: Why the TMG + Creatine + Glycine Stack Works
Each nutrient supports a different component of metabolic resilience.
Creatine
• preserves muscle• improves exercise output• reduces methyl demand
TMG
• restores methylation capacity• lowers homocysteine• supports liver fat metabolism
Glycine
• supports glutathione production• improves detox pathways• stabilizes nervous system function
Together they support the metabolic infrastructure required for efficient fat loss.
Step 9: The Ancestral Context
Anthropologists believe ancestral diets contained 10–15 g of glycine daily from:
- bone broth
- connective tissue
- skin
- collagen
Modern diets often provide 2–3 g per day, creating a relative glycine deficiency compared to methionine intake from muscle meat.
This imbalance may increase methylation stress and reduce metabolic resilience.
Step 10: A Practical Bedrock Framework
During metabolic interventions such as fasting or fat-loss phases:
Typical research doses include:
Creatine
3–5 g daily
TMG
1–3 g daily
Glycine
3–5 g before bed
Combined with:
- resistance training
- circadian alignment
- adequate protein
These nutrients help support:
• methylation• detoxification• mitochondrial function• muscle preservation• metabolic flexibility
Key Takeaway
Fat loss is not just about burning fat.
It is about the body’s ability to process the metabolic consequences of burning fat.
For individuals with methylation challenges — especially those with MTHFR variants or elevated homocysteine — supporting methylation and detox pathways may be essential for sustainable fat loss.
Supporting the terrain allows the body to do what it was designed to do.
To discuss if this would be a relevant part of your personal protocol. Reach out individually or email me at [email protected]
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TMG, Creatine, Glycine, Methylation, Fasting and fat loss - Super Science
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