Amino Acid & Peptide · Compound

Methionine

Provisional Moderate Scoreamino_acid

Hermetica Superfood Encyclopedia

Published March 15, 2026Last updated March 15, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Methionine is an essential sulfur-containing amino acid crucial for protein synthesis and metabolism. It serves as a precursor to S-adenosylmethionine (SAM), the primary methyl donor in cellular processes, regulating epigenetics and vital biosynthetic pathways.

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Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryAmino Acid & Peptide

GroupCompound

Public Score StatusProvisional Moderate

Primary KeywordMethionine supplement

Methionine close-up macro showing natural texture and detail — rich in anticoagulant, serotonergic, thyroid-active

Methionine — botanical close-up

Reported Benefits (Provisional)

Supports protein synthesis, enabling tissue growth and repair by contributing to the formation of structural proteins and enzymes.

Enhances detoxification pathways by assisting in the chelation of heavy metals and neutralization of toxins, particularly in hepatic processes.

Promotes liver health by facilitating lipid metabolism and preventing fat accumulation in the liver.

Boosts antioxidant defense as a precursor to glutathione, the body’s master antioxidant.

Facilitates fat metabolism, aiding in the breakdown and elimination of excess fats to support weight balance.

Supports keratin production, contributing to stronger hair, nails, and skin

Aids mood support by contributing to SAMe synthesis, which is essential for serotonin and dopamine production.

Origin & History

Natural habitat

Methionine is an essential sulfur-containing amino acid, vital for methylation, detoxification, protein synthesis, and lipid metabolism. It is found abundantly in high-protein foods such as meat, fish, dairy, and legumes. Methionine serves as a crucial precursor to key biomolecules like glutathione and S-adenosylmethionine (SAMe), making it fundamental for liver function, cellular protection, and the structural integrity of skin and hair.

“Modern biochemical compound without traditional medicinal history.”Traditional Medicine

Research Narrative (Provisional)

Research published in journals such as the Journal of Hepatology, Antioxidants & Redox Signaling, and the Journal of Clinical Psychiatry supports methionine's roles in liver health, antioxidant defense, and neurotransmitter synthesis.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- Essential sulfur-containing amino acid - Precursor to S-adenosylmethionine (SAMe) - Precursor to glutathione - Involved in lipid metabolism

Reported Mechanism (Provisional)

Mechanism of Action

Methionine's primary mechanism involves its conversion to S-adenosylmethionine (SAM), a universal methyl donor formed via methionine adenosyltransferase. SAM facilitates crucial methylation reactions for DNA, RNA, and histones, influencing gene expression and epigenetic regulation. Additionally, methionine contributes to polyamine and phospholipid synthesis, supports the folic acid cycle for purine/pyrimidine biosynthesis, and provides sulfur for various metabolic processes.

Clinical Narrative (Provisional)

Clinical research, published in journals like the Journal of Hepatology, consistently supports methionine's role in promoting liver health, particularly in detoxification and lipid metabolism. Studies in Antioxidants & Redox Signaling highlight its contribution to antioxidant defense mechanisms. Furthermore, investigations reported in the Journal of Clinical Psychiatry suggest its involvement in neurotransmitter synthesis, though specific outcomes and sample sizes for these studies are not detailed in the provided information.

Also Known As

L-MethionineMet

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These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

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