A preclinical study published in the Journal of Alzheimer’s Disease found that very small doses of tetrahydrocannabinol (THC) a chemical found in marijuana, can slow the production of beta-amyloid proteins thought to be a hallmark characteristic and key contributor to the progression of Alzheimer’s.

Another study from the Salk Institute in La Jolla, California found tetrahydrocannabinol and other compounds in marijuana may reduce the amount of beta amyloid in the brain. Beta amyloid is a hallmark characteristic of Alzheimer’s and is commonly thought to cause the neurodegenerative disease. Marijuana & Alzheimer’s.