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Studies related to Prolactin and Cannabis

Acute Effects Of Natural And Synthetic Cannabis Compounds On Prolactin Levels In Human Males

Effect Decrease
Values ng.ml. Mean and SEM. Regular users: before 7.1 (25), after 6.7 (2.4). Intermittent users before 5.6 (2.1), after 5.9 (2.2). Occasionally users before 5.5 (2.0), after 7.3 (2.6).
Trial Design Randomized trial
Trial Length 1-7 Days
Number of Subjects 23
Sex Male
Notes for this study:
In a placebo-controlled trial crossover trial, 23 adult men smoked a 1 cannabis cigarette containing 1.83% THC or placebo (there were also isolated cannabinoids used but this page doesn't concern them). They were separated into groups based on how much they had previously smoked cannabis: regularly, intermittently, or occasionally. 3 days were for cannabis or the isolated cannabinoids, and one was for placebo.

There was a small reduction in prolactin for regular and intermittent users which may not be reflective of anything. There was a larger reduction for occasional users, though none of these differences were statistically significant.