There have been whole book chapters just on this subject, but one example is wheatgrass effect on the blood. In Ann Wigmore book The Wheatgrass Book, she states that Wheatgrass juice contains liquid oxygen. And oxygen is vital to many body processes; it stimulates digestion, clearer thinking, and protective oxygenation of the blood. It also promotes better circulation of the blood, ultimately nourishing every single cell in your body.

Wheatgrass juice makes the blood vessels larger so that blood can flow through them more easily. Increasing circulation means better nutrition to the cells and more efficient removal of waste from them as well. Both processes are important in terms of healing or rebuilding the body.

You can apply this knowledge to a disease such as cancer. A German biochemist Dr. Otto Warburg won a Noble prize for his study which revealed that cancer cells can not exist in the PRESENCE of OXYGEN! Pretty neat discovery huh