Claims for “juicing” largely revolve around the recommendations of Max Gerson and his cancer treatment protocol (for instance, the one offered by the Gerson Clinic in Tijuana).
Instead of eating an immense volume of fruits and vegetables to “detox”, Gerson proponents say you need to drink an immense volume of juice from this produce, prepared in a special type of juicer, supposedly for better absorption. From the National Cancer Institute’s analysis of Gerson therapy:
*The diet is strictly vegetarian for at least 6 weeks and consists of specific fruits and vegetables, eaten either raw or stewed in their own juices. No animal protein is allowed. Some whole grains such as oatmeal are included. Flaxseed oil is allowed only because it aids in the body’s use of vitamin A.[2] No other fat such as cooking oil and no salt or spices of any kind are allowed. A glass of freshly prepared juice from vegetables and fruits must be consumed every hour for 13 hours throughout the day. The vegetables and fruits used on the diet are very high in potassium and very low in sodium.
Food preparation is also controlled. Food may be prepared only in cast-iron pots and pans; no aluminum cookware is allowed. Juices must be prepared using a specific type of juicer that crushes the fruit or vegetable rather than grinding it into pulp. Gerson advocated organically produced food, with all fruits, vegetables, and grains grown and raised in soil free of pesticides and contaminants and enriched only with natural fertilizers.[2]
The protein and dairy restriction may be lifted to include buttermilk; however, this restriction may continue through the entire course of the therapy, depending on the individual patient. Some changes in the original diet have occurred over time, but the initiation phase of the diet has always been a vegetarian diet.[2]
Taking specific vitamin and mineral supplements plus pancreatic enzymes is the second component of the regimen. Although there have been additions and substitutions to the basic list of supplements, there have been few changes since the 1940s. The typical range of supplements includes the following:
Potassium solution
Lugol’s solution (potassium iodide, iodine, water)
Injectable crude liver extract (no longer used) with vitamin B12 (substitution: coenzyme Q10 and vitamin B12)
Vitamins A, C, and B3 (niacin)
Flaxseed oil
Pancreatic enzymes
Pepsin*
In addition to drinking the 13 glasses of juice every day, patients are supposed to have 5 coffee enemas daily and down handfuls of supplement pills. Apparently it is beneficial for patients to spend a substantial part of every day on the toilet.
Also, this protocol doesn’t come cheap. The Gerson people say you should buy a special juicer for $2400, a hydraulic press for $600 and spend an estimated $4000/year for supplements (this is in addition to the $11,000 for two weeks at the Gerson clinic, plus other costs, including buying a second refrigerator to store all the produce, hiring someone to help you prepare, store and administer all this stuff etc.) And you may be required to follow this protocol for up to ten years, if you survive that long without evidence-based care (not likely).
All this cost and the toll of this miserable lifestyle would be worth it if it actually cured or substantially arrested cancer. But it doesn’t.
A clinical trial of Gerson-type therapy was recently concluded. It involved patients with pancreatic cancer. The outcome was that the patients who underwent coffee enemas and round-the-clock intake of supplements died faster and had poorer quality of life than those on evidence-based cancer therapy.