On this episode of the Big Brains podcast, a researcher breaks down his investigation of psychedelics for treating mental health disorders.

Researchers have discovered that older mice and those with a specific gene variant have "exhausted" immune cells in their brains.

People with PTSD have a cerebellum about 2% smaller than unaffected adults, especially in areas that influence emotion and memory.

Sleep does more than just ease sleepiness. It also helps restore our brain's operating system to a critical state, researchers propose.

New research adds to a growing evidence that sports that involve repeated blows to the head may lead to dementia.

Exercise and socializing in old age have a protective effect on a part of the brain that plays a central role in memory.

Smoking shrinks the size of your brain. Quitting smoking prevents further loss of tissue, but can't restore the brain to its original size.

Glioblastoma is one of the most treatment-resistant cancers. A new study offers clues as to how it can aggressively resist immunotherapy.

Ultrasound can guide "microvehicles" through blood vessels in the brain. Researchers hope this will lead to more precise drug delivery.

The loss of the so-called "happiness" chemical, serotonin, may contribute to memory problems, including Alzheimer's disease.