The MDMA metabolite, S-(+)- MDA, elicits more stereotypic behavior and is an even more potent neurotoxin than the parent drug. MDA destroys serotonin-producing neurons which play a direct role in regulating aggression, mood, sexual activity, sleep, and sensitivity to pain.
A new study out of the University of Kansas Medical Center claims that it does. Drinking three glasses of milk a day, the researchers argue, fights dementia by providing you with higher levels of an antioxidant called glutathione, which protects your brain cells.
The THC in marijuana can help the brain retain memory function if Alzheimer's is diagnosed early enough. It helps memory receptors in the brain to remain healthy for a longer period of time after the initial onset of Alzheimer's.