Hermetica Superfood Encyclopedia
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
Phosphatidic acid is a bioactive phospholipid that directly activates the mTOR (mechanistic target of rapamycin) signaling pathway, stimulating muscle protein synthesis. It functions as a lipid messenger that enhances anabolic processes, leading to increased lean muscle mass and strength gains.
Reported Benefits (Provisional)
Origin & History
Phosphatidic Acid is a phospholipid found in cell membranes and is involved in signaling pathways that stimulate muscle protein synthesis.
Research Narrative (Provisional)
Research, including some clinical trials, suggests Phosphatidic Acid can enhance muscle growth when combined with resistance training.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
Phosphatidic Acid (PA) is a glycerophospholipid, not a traditional macronutrient or micronutrient source. Typical supplemental doses range from 250–750 mg/day, with 750 mg being the most studied dose in human trials. As a phospholipid, it contains a glycerol backbone, two fatty acid chains (commonly palmitic C16:0 and oleic C18:1 in soy-derived PA), and a phosphate head group. Caloric contribution is negligible at supplemental doses (~6–7 kcal per 750 mg dose, primarily from fatty acid chains). Macronutrient breakdown per 750 mg serving: lipid content ~750 mg (predominantly phospholipid-bound fatty acids), protein content ~0 g, carbohydrate content ~0 g. Key bioactive compound: phosphatidic acid itself, acting as a lipid second messenger that directly binds to and activates mTORC1 (mechanistic target of rapamycin complex 1) via the FKBP12-rapamycin binding (FRB) domain. Soy-derived PA (the most common commercial source, e.g., Mediator brand by Chemi Nutra) contains approximately 50% PA by weight with remaining phospholipid fractions (phosphatidylcholine, phosphatidylinositol as minor components). Bioavailability: PA is hydrolyzed in the gut to lysophosphatidic acid (LPA) and diacylglycerol (DAG), both of which can be re-synthesized into PA intracellularly; direct intestinal absorption of intact PA molecules is limited but measurable. No significant vitamin or mineral content is present at supplemental doses.
Reported Mechanism (Provisional)
Phosphatidic acid directly binds to and activates mTOR Complex 1 (mTORC1) by displacing the inhibitory protein FKBP12-rapamycin binding domain. This activation triggers downstream signaling through p70S6K1 and 4E-BP1 pathways, which initiate ribosomal protein S6 phosphorylation and eIF4E release. The result is enhanced translation initiation and increased muscle protein synthesis rates.
Clinical Narrative (Provisional)
Human studies using 750mg daily phosphatidic acid supplementation show 3% increases in lean body mass over 8 weeks in resistance-trained individuals. A randomized controlled trial with 28 participants demonstrated significant improvements in squat and bench press strength compared to placebo. Additional research indicates enhanced muscle thickness measurements via ultrasound after 8 weeks of supplementation. However, the total number of human studies remains limited, with most research conducted on small sample sizes of 20-30 participants.
Also Known As
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