Tetrahydrocannabinol (THC) and cannabidiol (CBD) are two of the most studied and discussed elements, or cannabinoids, present in different strains of marijuana. However, researchers have identified at least 144Trusted Source different cannabinoids so far.
THC and CBD have very different effects on the human body. Knowing whether a cannabis plant is from the indica or sativa strain does not always provide much information about the relative amounts of THC or CBD it may contain, as people tend to believe, but it can be helpful.
It is also important to note that THC and CBD are only two of the hundreds of chemicals that create the varying effects of different strains of marijuana. The sections below provide more information on these two chemicals.