One review included evidence that marijuana lowers testosterone levels, and concluded that «chronic marijuana use showed no significant effect on hormone concentrations in either men or women». (supernaturalacnetreatment.com)
In contrast, dogs that have falsely low serum thyroid hormone concentrations secondary to illness or drug therapy have a normal thyroid image. (animalendocrine.com)
Several studies have examined the association between hormone concentrations and cognition, but results have been inconsistent. (sciencedaily.com)