If we look at oxygen as a bullet to kill cancer cells, then we should look at wheatgrass as a shotgun blast at treating cancer. The number of ways it deals with cancer is incredible. First of all, it contains chlorophyll, which has almost the same molecular structure as haemoglobin.
Chlorophyll increases haemoglobin production, meaning more oxygen gets to the cancer. Selenium and laetrile are also in wheatgrass, both are anticancer. Chlorophyll and selenium also help build the immune system. Furthermore, wheatgrass is one of the most alkaline foods known to mankind. And the list goes on.
Wheatgrass contains at least 13 vitamins (several are antioxidants), including B12, many minerals and trace elements, including selenium, and all 20 amino acids. It also contains the hormone abscisic acid (also called: dormin, see below), the antioxidant enzyme SOD (Superoxide Dismutase, see below) and over 30 other enzymes, the antioxidant enzyme cytochrome oxidase (see below), laetrile (see its own page), and a whole lot of other nutrients.
In other words, SOD converts one of the most dangerous free radicals: Reactive Oxygen Species (ROS), into a hydrogen peroxide molecule (which has an extra oxygen molecule to kill cancer cells) and an oxygen molecule.
I suspect the main reason chlorophyll is so good at dealing with cancer is the oxygen availability it provides.
One key question about wheatgrass is how long to wait after cutting it before you consume it. Most people, taking their cue from Ann Wigmore, say to take it immediately after cutting and juicing. However, the hormone abscisic acid (ABA) is 40 times more potent four hours after cutting the wheatgrass than it is at the time of cutting. So the question boils down to this: How important is ABA to treating cancer compared to the other anticancer substances in wheatgrass?
Before her death, Dr. Virginia Livingston-Wheeler had a clinic that cured cancer patients. Her vaccine was based on abscisic acid. This is a quote about her clinic.
So what do you do, eat it immediately or four hours after you cut it? Perhaps both. Perhaps when you cut your wheatgrass and juice it, you drink most of it immediately and some four hours later you drink the rest of it.
The reason we get into such a technical issue is because in some cases wheatgrass juice therapy did not work as promised. This may be because the patient drank a lot of tap water with chlorine in it or it may be because abscisic acid is more important than thought or for some other reason. By splitting up the wheatgrass juice into two sessions, you get the best of both worlds.