When Richard Nixon declared war on drugs in the early 1970’s one of the not-so-obvious results of this mammoth policy shift was that scientific researchers were set back decades in discovering new cannabinoid-based treatments for serious medical conditions. In just a few decades the U.S. government was able to wipe thousands of years of anecdotal as well as solid scientific evidence of the efficacy of cannabis in treating a wide range of ailments and diseases from our collective medical knowledge.

For those who have spent a considerable amount of time fighting for cannabis law reform it comes as no surprise, then, that our government and pharmaceutical corporations have long fought to keep secret the fact that cannabis can be an effective treatment for certain types of cancer. And we’re not just talking about relieving nausea that comes from chemotherapy and radiation treatment, but actually shrinking or eliminating cancerous tumors.

Here are links to 44 scientific studies that demonstrate the efficacy of cannabis as a cancer treatment. Thanks to reddit user datJedi for compiling this list.

Brain Cancer

Mouth and Throat Cancer

Breast Cancer

Lung Cancer

Uterine, Testicular, and Pancreatic Cancers

Prostate Cancer

Colorectal Cancer

Ovarian Cancer

Blood Cancer

Skin Cancer

Liver Cancer

Biliary Tract Cancer

Bladder Cancer

Other Cancers