cannabis

One reason cannabis is so safe to use is that it does not affect any of the involuntary muscles of breathing and life support. Rather, it affects its own specific receptor cites for motion (movement strategy) and memory (mental strategies).On the molecular level, THC fits into receptor sites in the upper brain that seem to be uniquely designed to accommodate THC. This points to an ancient symbiosis between the plant and people.Perhaps these neuronal pathways are the product of a pre-cultural relationship between humans and cannabis marijuana seeds. Carl Sagan proposes evidence using the Bushmen of Africa to show hemp to have been the first plant cultivated by humanity dating to when he was a hunter-gatherer. Some scientist assume that these receptor sites did not evolve for the purpose of getting high: “There must be some kind of neuronal pathway in the brain that developed, whether there were cannabis plants or not,” speculated mystified St. Louis University pharmacology professor.