Pregnenolone & Corticosteroids in Brain Health | Sherwood Brown | Episode 293

Send us Fan MailPregnenolone, a neurosteroid derived from cholesterol, affects brain activity and shows promise for treating mood and substance abuse disorders.TOPICS DISCUSSED:Steroid Biosynthesis: Cholesterol converted to pregnenolone, the precursor for all steroid hormones including cortisol, aldosterone, and sex hormones.Corticosteroids: Synthetic versions like prednisone primarily target glucocorticoid receptors for anti-inflammatory uses but can impact mood and cognition.Pregnenolone Mechanisms: Positive allosteric modulator of NMDA receptors for cognition and negative allosteric modulator of CB1 cannabinoid receptors.Allopregnanolone: GABAergic derivative of pregnenolone; its IV form Brexanolone is FDA-approved for postpartum depression.Clinical Trials: Pregnenolone at 100-500 mg improved depressive symptoms in placebo-controlled studies of bipolar disorder patients.Cannabis Interaction: THC robustly induces brain pregnenolone production; supplementation may reduce cannabis and alcohol use.Corticosteroid Brain Impact: Prednisone use associated with smaller hippocampal volumes and memory deficits.ABOUT THE GUEST: Sherwood Brown, MD, PhD is Vice Chair for Clinical Research in the Department of Psychiatry at the University of Texas Southwestern Medical Center in Dallas. With a background in chemistry, his research focuses on steroids and comorbidities in people with mood disorders.RELATED EPISODE:M&M 124: Hormonal Contraception, Sex Hormones, Menstruation, Pregnancy, Puberty, Estrogens, Androgens, Effects of Birth Control on Cognition | Adriene BeltzSupport the showHealth Products by M&M Partners:AquaTru: Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models.OmegaQuant: At-home blood testing to see fatty acid profiles, including omega-3 fatty acids. Use link to see options and support M&M.SiPhox Health: Comprehensive, cost-effective bloodwork from the comfort of home. Use code TRIKOMES for 20% off.KetoCitra—Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime)SporesMD: Premium mushrooms products (gourmet mushrooms, nootropics, research). Use code 'nickjikomes' for 20% off.For all the ways you can support my efforts