When Dr. Homoud Aldahash started the three-hour process of removing a tumor about the size of a walnut from a patient's brain, it was an experience unlike any other in his 25 years as a neurosurgeon.

A week of lavender-scented nights helped brain surgery patients sleep more deeply, shorten delirium, and feel calmer, pointing to a simple, natural aid for post-surgery care. Study: Effects of ...