CBD Gummies for Anxiety the body’s endocannabinoid system (ECS), a complex network of receptors responsible for maintaining balance (homeostasis) in processes like mood, sleep, and stress. Research suggests that CBD may influence serotonin levels in the brain, similar to how selective serotonin reuptake inhibitors (SSRIs) work. Serotonin is a key neurotransmitter that helps regulate mood and anxiety.