Gingerol is a phenolic compound found in ginger root. It has been found to have anti-cancer, anti-inflammatory, and anti-bacterial effects.
In one research study (1), gingerol was able to fight pancreatic cancer in both in-vitro and in vivo studies on rodents. The mechanism of action of gingerol was determined. It found that gingerol blocked cell growth in several pancreatic cell lines.
As an anti-inflammatory supplement, it can fight cancer by reducing inflammation, which can cause cancer. The study was an in vitro study, meaning that it was done in a culture medium and not in humans or animals. More human studies need to be done to see if gingerol has an effect on humans with cancer.
Source: 1.Park YJ, et al. -Gingerol Induces Cell Cycle Arrest and Cell Death of Mutant p53-expressing Pancreatic Cancer Cells. Yonsei Med J. 2006 Oct 31; 47(5): 688–697.