Ask the Doctor: Cortisol; Hypnagogic Hallucinations; Antihistamines and Cognition

Q: What is cortisol, and what is the connection to stress? A: Cortisol is a steroid hormone produced by the adrenal glands, which sit atop each kidney. When cortisol is released into the bloodstream, it affects the body in many ways. It helps regulate your blood glucose, water and salt balance, and blood pressure, and helps […]


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