Wednesday, Feb 28, 2024

Jean LaMantia (Rd): Juice Therapy for Cancer Patients

There seem to be two sides to the question of juicing to prevent cancer. One side is the proponents who claim that juicing can be a great way to get a lot of fruits and vegetables, and that the removal of fiber helps with the absorption and bioavailability the cancer fighting nutrients.

Others are worried that juice can cause rapid increases in blood sugar, which could lead to cancer growth. What research has been done to determine which side is correct?

The UK's authors reviewed the pros and cons for fresh juice consumption. They concluded that 75-224ml of fresh juice daily did not increase the risk for obesity, type II diabetes or cardiovascular disease. In short-term studies, 500ml of fresh juice per day has been shown to be beneficial for blood vessel function and lower blood pressure.

The review also mentions two publications that support the belief of juice proponents that juice is more bioavailable than fresh fruit.

Juicing for cancer can be approached from both a prevention and treatment perspective. In observational studies, sugar-sweetened beverages and fruit juices were associated with higher rates of cancer. This analysis did not include vegetable juice consumption which is naturally lower in sugar.

Gerson therapy is one of the most popular juicing methods for cancer treatment. This protocol includes 13 glasses of fresh pressed juice, mostly carrot, per day as well as a variety supplements and a daily elimination protocol.
Six case studies were published. While there were limitations, the researchers called them "compelling survival data". This review did not clarify the role that juicing plays in cancer. However, it was able to highlight the need for more well-designed research to determine if this juicing method is indeed beneficial. This research is something I would welcome, but it's not likely to happen. The risks involved in this type of research are very high. Participants must forgo traditional cancer treatment.

800g (1.75 lbs.) was the recommended daily intake for optimal health. 800g (1.75 lbs.) of fruits and veggies per day was found to be the ideal amount. This may prove difficult for some people. They may find that drinking juice instead of eating the recommended amount of fruits or vegetables is the best way to get their daily intake.

This amount is twice the recommended amount by the World Cancer Research Fund. They recommend that you consume 400 grams (0.8 lbs. A daily intake of 30 grams fiber and 40 grams of whole grains will help to prevent cancer. You can get some of the 30g of fiber from whole grains, legumes, and nuts. However, whole fruits and vegetables will help you increase your fiber intake.

The question of whether juice is good for cancer prevention or treatment is still open to debate. The following are my suggestions: If you drink juice, make sure to include a variety of fruits and vegetables. Drinking juice after eating or with protein may slow down the rise of blood sugar. Juicing is a great alternative to cancer treatment. It will take careful thought and research.

Juce Recipes to Try

Orange Energizing Juice
Erica Julson is a Registered Dietitian Nutritionist.


  • 5 large organic carrots
  • 2 organic oranges, peeled and cut into pieces to fit in a juicer
  • 1 organic lemon, peeled and cut to fit in juicer
  • 1 inch piece of fresh ginger, peeled
  • 2 Fuji, Honey Crisp, or Cameo apples, cut to fit in a juicer


  • Turn on the juicer and assemble. You will need to feed the fruits and vegetables.
  • Enjoy the juice by grabbing it from the bottom. You can also store the juice in an airtight container in your fridge for up 3 days. I like to add a few ice cubes for extra refreshment.
  • You can either throw away the pulp or use it in another recipe.


Refer to

Ruxton CHS, Myers M. Fruit Juices - Are They Helpful Or Harmful? An Evidence Review. Nutrients. 2021 May 27, 2013, 13(6):1815. doi : 10.3390/nu13061815. PMID: 34071760; PMCID: PMC8228760.

Molassiotis A and Peat P. Surviving despite all odds: Analysis of six case studies from patients with cancer who received the Gerson therapy. Integr Cancer Ther. 2007 Mar;6(1):80-8. doi: 10.1177/1534735406298258. PMID: 17351030.

Aune D. Plant Foods and Antioxidant Biomarkers and the Risk of Cardiovascular Disease and Cancer: A Review of the Evidence. Adv Nutr. 2019;10(Suppl_4):S404-S421. doi:10.1093/advances/nmz042

Li Y., Guo L., He K., Huang C., Tang S. Sugar-sweetened beverages and juice consumption and human cancer: a systematic overview and dose-response analysis of observational studies. J Cancer. 2021 Mar 21st;12(10),3077-3088. doi : 10.7150/jca.51322. PMID: 33854607; PMCID: PMC8040874.

About the Author

Jean LaMantia, a registered dietitian and cancer survivor, is the creator of Lymphedema Nutrition School. Jean assists cancer survivors and patients with her blogs, books and 1:1 virtual nutrition counseling. She also offers self-study classes and small group classes to those suffering from lymphedema. Jean's blog is You can learn more about Jean.

This content is not meant to replace professional medical advice, diagnosis or treatment. If you have any questions regarding a medical condition, consult your doctor or another qualified health provider.
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