LSD and ketamine, two powerful hallucinogens, are also potential cures for depression, OCD, and anxiety. Two studies published in Science and Nature, confirm that hallucinogenic drugs stimulate healthy brain activity, even promoting the growth of neurons.
Ketamine and Depression
The study in Science, focused entirely on the drug ketamine. Used frequently as an animal sedative, ketamine can also be used to sedate humans and is also taken recreationally because of its hallucinogenic and euphoric effects. Molecular psychiatrist Nanxin Li and colleagues dosed rats with modest amounts of ketamine, and observed that the drug boosted signaling between neurons in the brain, and even led to healthy growth of synapses. (Chronic depression can be linked to inhibited synaptic growth.) Ultimately, they concluded that ketamine might be useful in treating depression because it increases brain activity instantly - so there is no need to wait weeks or months for the drug to take effect.