The Alzheimer's Research Trust stated in a Feb. 22, 2005 article in BBC News titled "Marijuana May Block Alzheimer's":

“If it is possible to make drugs that act only on CR2 [one of two main types of cannabinoid receptor in the brain]… they might mimic the positive effects of cannabinoids without the damaging ones of marijuana.

However, this is a fairly new field of research and producing such selective drugs is not an easy task. There is also no evidence yet that cannabinoid-based drugs can slow the decline in human Alzheimer’s patients.”

Feb. 22, 2005