cannabis in many varieties and cannabinoids especially the most significant naturally made potentially aboundant and so theoretically cheaply sourceable receptors' agonist compound, namely delta-9-thc, when taken not occasionally i.e. within a continuous pattern of increasingly large quantities, in order to steadily reach without having to rise a too harsh steep slope, to plateau when the desired medical effect could manifest, in extracted purified forms, at high molar concentrations (up to and over 5-10 µM depending on different malignancies) have demostrated - albeit not in many practical human targeted clinical settings despite numerous studies dating back since 1974 and even more so in the last recent decades, have confirmed such potential usage - a strong antiproliferative, antineoplastic, antitumor, anticancer activity.