The federal government recently admitted that cannabis is effective in shrinking certain types of cancer cells. The unexpected and groundbreaking declaration was made in a recent update to a National Institute on Drug Abuse information sheet on medical marijuana. The NIDA statement read: Recent animal studies have shown that marijuana can kill certain cancer cells and reduce the size of others.
Evidence from one animal study suggests that extracts from whole-plant marijuana can shrink one of the most serious types of brain tumors. Research in mice showed that these extracts, when used with radiation, increased the cancer-killing effects of the radiation.