Researchers at the National Center for Agricultural Utilization Research (USDA) have identified compounds called dadahol A and dadahol B in the roots of industrial hemp. In laboratory tests, fractions containing these compounds reduced the viability of several pediatric cancer cell lines (including neuroblastoma, hepatoblastoma, and Hodgkin's lymphoma).

According to a study published in the medical journal Phytomedicine, CBD may have anti-tumor potential. The authors suggest that it increases pressure on certain cancer cells, limiting their ability to adapt. However, these results are preliminary and will need to be confirmed by further research, particularly in humans, before clinical applications can be considered.