The Bully Pulpit: The definition of irony

Some scientists have figured out, according to the Daily Mail, that marijuana can be used to counteract some of the impacts of Alzheimer's, specifically those dealing with memory.

"One of the 400 compounds in the drug can significantly slow memory problems caused by the disease, tests show," says the article.

With Ronald Reagan being the unfortunate poster president for that tragic disease, does this mean the end of "just say no" to marijuana? Or does it mean that while 1 compound helps fight Alzheimer's, the rest vaporize so many brain cells that in the end for most long-time dope smokers the end result is a wash?

I have old friends I could call as research subjects, but I can never seem to remember their phone numbers ...