Which of These Illicit Drugs Is the Most Brain Damaging?

Question by DJ: Which of these illicit drugs is the most brain damaging?
I’m doing a research project for psychology and the topic is about neurology. I came across an interesting graph on this site:

http://faculty.washington.edu/chudler/wdrug.html

But the graph is ranked by physical addiction and physical harm but not brain damage. My question is which drugs from the following list causes the most brain damage (negatively effects cognitive ability, concentration, and ability to learn; instead of just causing physical dependence) in the long term and not just under influence or coming down from the effects

Marijuana
Ecstasy
Mushrooms
LSD
Alcohol
Cocaine
Meth
Any other drug listed on the above website

Best answer:

Answer by dontbelievethehype
LSD , i heard something like if you do LSD four times i think, you are considered legally insane in the court of Law.

Answer by ?green goddess?
i would imagine meth, but i don’t know a ton about drugs so that’s just a guess. but marijuana does kill brain cells so…

Wolf 47 works full-time for Washington researchers
Before becoming Washington's wolf biologist two years ago, Becker cut his teeth on capturing wolves and grizzly bears with state and federal wildlife agencies working in Wyoming and Yellowstone National Park. "I've worked … Becker plucks ponderosa …
Read more on Ravalli Republic

Holder Urges Use of Drug to Combat Heroin Overdoses
Attorney General Eric Holder has urged first responders to carry a drug that can reverse heroin overdoses, in order to help curb the “growing public health crisis” of addiction to the drug. Holder announced the new initiative in a video posted Monday …
Read more on TIME

Chronicle AM–March 10, 2014
Jared Polis (D-CO) has introduced the Limiting Unsafe Cannabis-Impaired Driving (LUCID) Act, which would expand the federal definition of an impaired driver to include those impaired by marijuana use. The bill is not yet available online, and the …
Read more on Drug War Chronicle

Sound Recovery Center Washington State — Sound Recovery’s nationally acclaimed drug and alcohol rehab program is for those struggling with substance abuse issues and chronic relapse. Many times fami…

Related Drug Addiction Help Washington Information…