Ketamine has a long track record being used as an analgesic for medical procedures. Historically, this medication was used to reduce peri-operative pain (pain before, during, and after a procedure). Now, ketamine is proving to be useful in treating daily chronic pain, unrelated to a medical procedures.
Imagine a lush green forest, filled with many trees with numerous branches. Now, imagine the opposite. The same trees, but instead brown and with branches falling off. These trees are now dying out. This forest is now sparse due to repeated fires, harsh weather, and pollution. The forest is functioning below what it could, and producing less oxygen and food for the creatures it protects.
