Brain health Archive

When tremors progress from a mild nuisance to disrupting daily life, specific therapies may offer relief and help steady your movements.

Tingling, leg weakness, and voice changes can be alarming. Learn how doctors sort out these symptoms and when Parkinson's disease may be suspected.

Name slips and misplaced keys can feel unsettling in your 70s. Learn which memory changes are typical and when they might signal something more.

A blackout can be frightening and confusing. Learn what clues doctors look for and which tests help uncover the cause.

A 2025 study of 250 people found that the brain can tell the immune system to prepare for impending infection even before a microbe enters the body. Scientists asked volunteers to don virtual reality headsets that showed various virtual people approaching them. Some of those approaching appeared to be healthy and others appeared to be sick. Brain scans and blood tests showed that participants' brains activated their immune systems when a virtual sick person simply came near them.

Essential tremor is marked by involuntary shaking of one or more body parts, such as the hands, arms, legs, or head. Avoiding caffeine and stress and getting plenty of rest can be helpful. Several medications are available to ease the symptoms.