Cannabinol (CBN) is the primary product of THC degradation, and there are usually only trace amounts of it in a fresh plant. CBN content increases as THC degrades from exposure to light and air. Cannabis plants that are high in CBN have strong sedative effects, and as a result, are popularly used as a natural sleep aid. Not only has CBN proven to help patients fall asleep, it has also been proven to increase appetite, reduce inflammation, alleviate pain, and when used as a topical, kill bacteria. It is common for indica strains to have a higher CBN content than sativa strains.