Study | 6 October 2026
Medical cannabis alongside chemotherapy in advanced prostate cancer
A five-year South African study of 90 men with stage 4 prostate cancer compared chemotherapy, medical cannabis and the two combined.
A CBMA summary of the study. The full study and its source are available to members.
A five-year doctoral study followed 90 men over 60 in South Africa with advanced stage 4 prostate cancer, across three treatment regimens.
Patients receiving chemotherapy combined with medical cannabis achieved a 63% rate of tumour reduction or remission, compared with 30% for chemotherapy alone and 33% for cannabis alone. The study also reported improvements in bone pain management and quality of life.
The researchers are calling for formal medical regulation of cannabis in South Africa and encourage oncologists to examine the clinical data.
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