Marijuana may be able to slow the progression of Alzheimer's disease, a study led by Kim Janda of the Scripps Research Institute suggests. The 2006 study, published in the journal Molecular Pharmaceutics, found that THC, the active chemical in marijuana, slows the formation of amyloid plaques by blocking the enzyme in the brain that makes them. These plaques are what kill brain cells and cause Alzheimer's. - Business Insider - Olivia Mannix, Jennifer DeFalco and Meg Sanders pictured
