Previously, a number of studies have demonstrated ginger's potential as an anti-inflammatory agent. Suzanna M. Zick, from the University of Michigan Medical Center (Michigan, USA), completed a study involving 30 men and women, who consumed either a supplement containing 2 g of ginger extract (equivalent to 20 g of raw ginger root), or a placebo, daily for 28 days.  The researchers found that certain markers of inflammation, known as eicosonoids, were reduced by 28% among the subjects who consumed the ginger supplement.  The team reports that: "Ginger has the potential to decrease eicosanoid levels… [and] also seemed to be tolerable and safe.”