Their work also went a long way toward illuminating how the drug works in the brain . Scientist Steven Cohen has made studying marijuana his life 's work . There are more than 100 natural components in the marijuana plant . ` ` The cannabis effect '' means those components may work best together .
Scientist Steven Cohen has made studying marijuana his life 's work . There are more than 100 natural components in the marijuana plant . ` ` The cannabis effect '' means those components may work best together .