Moderate coffee consumption increases plasma glutathione but not homocysteine in healthy subjects - Esposito, F.; Morisco, F.; Verde, V.; Ritieni, A.; Alezio, A.; Caporaso, N.; Fogliano, V. (Blackwell Science Ltd, 2003)
http://dx.doi.org/10.1046/j.1365-2036.2003.01429.x
Keywords: WW-YZ