Do eggs and sausage contribute arachidonic acid to the diet?

Eggs and sausage can supply preformed arachidonic acid (AA), an omega-6 fatty acid that can be incorporated into membrane lipids and serve as precursor for AA-derived eicosanoids. The claim is supported, with the dietary contribution far more consistent and quantifiable for eggs than for sausage.

Dietary contribution

• Eggs: Analytical studies find approximately 86–140 mg AA per 100 g edible portion. A typical 50-g egg provides roughly 50–70 mg. Variation reflects hen feed and production conditions, but eggs are a reliable direct source.
• Sausage: Pork-sausage analyses report AA at about 0–1% of total fatty acids, commonly ~0.2–0.3%. Actual intake per serving is highly formulation-dependent—affected by meat species, lean-to-fat ratio, added fats or vegetable oils, and processing—so sausage is a potential rather than consistent AA source.

Mechanistic and human evidence

• Human randomized supplementation studies at 240–720 mg/day show dose-dependent increases in plasma/serum phospholipid AA, detectable by 2 weeks and plateauing around 4 weeks; AA incorporation has also been reported in erythrocytes and platelets.
• AA is predominantly esterified at the sn-2 position of membrane glycerophospholipids. With cellular stimulation, cytosolic phospholipase A₂α releases free AA. Cyclooxygenase, lipoxygenase, and cytochrome-P450 pathways can then generate prostaglandins, thromboxanes, leukotrienes, lipoxins, and related metabolites.
• More membrane AA provides precursor substrate, but does not assure higher eicosanoid output. PLA₂ activation and downstream enzyme activity are regulatory; EPA also competes with AA for membrane incorporation and cyclooxygenase/lipoxygenase metabolism. In healthy older adults, higher phospholipid AA did not significantly increase measured circulating or urinary AA-metabolites.

Bottom line

• Eggs, and variably sausage, add dietary AA that can expand the membrane-associated precursor pool for eicosanoid synthesis; actual eicosanoid production remains dependent on inflammatory/cellular stimuli and enzymatic context.