Diabetes doubles the risk of liver, pancreas, and endometrial cancer. It increases the risk of colorectal, breast, and bladder cancer by 20% to 50%. Dr. Jason Fung believes hyperinsulinemia plays a role in the development of cancer. Dr. Fung has written a new book titled The Cancer Code (©2020).


Collins, Karen K., MD, RDN, CDN. “The Diabetes-Cancer Link,” Diabetes Spectrum 2014 Nov; 27(4): 276-80. https://doi.org/10.2337/diaspect.27.4.276. https://spectrum.diabetesjournals.org/content/27/4/276 (accessed on 8/2/2020).

Giovannucci, Edward, MD, SCD, et. al. “Diabetes and Cancer: A consensus report.” Diabetes Care. 2010 Jul; 33(7): 1674–1685.doi: 10.2337/dc10-0666. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2890380/ (accessed on 8/2/2020).

Fung, Dr. Jason. “Hyperinsulinemia and cancer – Cancer 2,” The Fasting Method, n.d. https://thefastingmethod.com/hyperinsulinemia-cancer-cancer-2/ (accessed on 8/2/2020).

Source: https://www.webmd.com/diabetes/news/20100616/why-does-diabetes-increase-cancer-risk (accessed 3/2020)

Cancer, Pain Relief & Diet: Ron Rosedale and Shelley Schlender

Cancer Rates Higher in Type 1 and Type 2 Diabetes
Becky McCall, December 15, 2014

How a High-Fat Diet Helps Starve Cancer
Normal, healthy cells have the metabolic flexibility to adapt from using glucose to using ketone bodies. Cancer cells lack this ability so when you reduce net carbs (total carbs minus fiber), you effectively starve the cancer.

Hyperinsulinemia and cancer – Cancer 2

The Diabetes-Cancer Link

The ketogenic diet fights cancer, diabetes and Alzheimer’s

What is the relationship between breast cancer and diabetes?
Several studies have confirmed that elevation in insulin levels contributes to proliferation of breast tissue and can lead to development of breast cancer.