You might be familiar with a sensation called "brain zaps," or sensory disturbances that feel like electric shocks inside the brain. This symptom can occur after you skip or stop antidepressants ...

But scientists have long assumed that bacteria can’t survive in the human brain. The powerful blood-brain barrier, the thinking goes, keeps the organ mostly free from outside invaders.

The cells in the area are also connected with metabolism, suggesting a connection between diet and brain health. Scientists at the Allen Institute have identified specific cell types in the brain ...