Wasabi has significant anti-bacterial properties. It curbs the growth of germs that cause food poisoning such as Bacillus coli, Salmonella, Vibrio parahaemolyticus and Staphylococcus. It is also said to curb the growth of mold and yeast.
The main component of Wasabi helps to suppress the cohesion of blood platelets. This anti-coagulant effect could help to prevent blood clots.
Wasabi has been shown to inhibit intestinal chloride secretion, which means that it may have the effect of calming stomach disorders.