8(Z),14(Z)-Eicosadienoic acid is an ω-8 C20:2 fatty acid. The presence of 8(Z),14(Z)-icosadienoic acid has been detected in human milk at a level of 0.19% (weight % total fatty acids).{16837} Eicosadienoic acids are converted by desaturases, in vivo, to eicosatrienoic acids, which are potent vasodilators. The physiological effects of 8(Z),14(Z)-eicosadienoic acid are unstudied.