What the Study Found (In Plain English)
Published in European journal of endocrinology (2003), this randomized controlled trial evaluating 36 human participants investigated: The aim was to investigate the effect on mood and the physical symptoms of two dosages of natural progesterone and a placebo in postmenopausal women with and without a history of premenstrual syndrome (PMS). Key clinical takeaway: In women without prior PMS natural progesterone caused negative mood effects similar to those induced by synthetic progestogens.
Dr. Lin (AI Evidence Lead): Statistical Endpoints & Numbers
Primary Endpoint & Quantitative Summary (European journal of endocrinology, 2003-05-15; N = 36; Rigor 88/100): In women without prior PMS natural progesterone caused negative mood effects similar to those induced by synthetic progestogens.
Study Limitations & Caveats Before You Act
Clinical trials evaluate specific inclusion/exclusion cohorts under protocol-controlled conditions (Randomized Controlled Trial). Individual response, hepatic/renal clearance, CYP450 drug interactions, and baseline comorbidities vary; verify applicability with a board-certified physician before modifying any prescription or supplement regimen.