THC is the main psychoactive component of the marijuana plant. In other words, THC is the primary agent responsible for creating the “high” feeling associated with marijuana use. This compound works by imitating the effects of anandamide, a neurotransmitter produced naturally by the human body to help modulate sleeping and eating habits, as well as the perception of pain.
The effects of THC include (1):
Altered senses of sight, smell, and hearing