Speaking of diseases, it is worth noting that alcohol use can lead to the development of cancer. At this point, it’s no secret that alcohol abuse is linked to a number of different cancers, including cancers of the colon, stomach, esophagus, lungs, liver, pancreas, and prostate. Marijuana, on the other hand, has not been conclusively connected to any kind of cancer. Deborah Korenstein, chief of the General Medicine Service at Memorial Sloan Kettering Cancer Center, says, “The unfortunate short answer is that we just don’t really know that much. There were problems with almost all of them that really limited our ability to draw conclusions.” She and her colleagues examined a myriad of scientific literature to determine if marijuana consumption can be linked to cancer. They were unable to draw a conclusion.