Additionally, some CBD products may contain enough THC to produce a positive result in a drug test. A 2010 brain cancer study by California scientists found that CBD "enhances the inhibitory effects of THC on human glioblastoma cell proliferation and survival. https://medium.com/@rob_79127/purelife-organics-gluco-control-your-natural-solution-for-healthy-blood-sugar-levels-b9f46a48f571