The episode covers the key symptoms of depression, including anhedonia, sleep disruption, and emotional distress, and explains how neurotransmitters like serotonin, dopamine, and norepinephrine are involved. It explores traditional antidepressants such as SSRIs, their limitations, and why individual responses vary. Biological contributors like thyroid function, cortisol levels, and genetic predisposition are also discussed. Emerging treatments like ketamine and psilocybin are highlighted for their potential to reset neural pathways. Lifestyle tools such as exercise, cold exposure, omega-3s, and creatine supplementation are presented as supportive strategies. The episode concludes with promising dietary approaches, particularly the ketogenic diet, and emphasizes a holistic, science-based approach to managing depression.