There is growing evidence that compounds of plant origin have the ability t
o prevent cancer. Populations with greater reliance on fruits and vegetable
s in the diet experience a reduced risk for the major cancers. Research has
focused on specific micronutrients and nonnutrient compounds that may have
health benefits, The term phytochemical means any compound of plant origin
. This review focuses on the cancer-preventive aspects of phytochemicals an
d their mechanisms of action. The term phytomedicine applies to the health-
maintaining aspects of these compounds and their implications for raising t
he standard of public health.